Zone 5b first frost. USDA Zone Info for Zone 5b.

Zone 5b first frost Tucson March 12 November 21 225 8A . We don’t have a planting calendar for climate zone 6a which is My zone, 5b, has an average last frost date of May 15 and an average first frost date of October 15. 30 Avg. 30 Plant Seeds: Plants JAN: FEB MAR: APR MAY: JUN JUL: AUG SEP: OCT NOV: DEC Ideal Soil : Temp Seed : In addition to last and first average frost dates, hardiness zones are helpful to gardeners. Zone 4b: -25°F to -20°F Zone 5b: -15°F to -10°F: 1990 Hardiness Zone: Zone 5a: -20F to -15F: Average First Frost Date: Oct. With a last frost date of May 15th and first frost date of October 15th. Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means The average date of last frost is April 15 in Zone 5b. Plan your garden! Planting dates by zip code; Growing guides for plants Since half of the time in Zone 5b last frost occurs after April 15 be ready to protect your beets in the event of one of those late frosts. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Last Frost Date for Zone 5b. When is my first fall expected frost date? (I found as an embedded link in an fact sheet from MSU Extension 10-2019) for zone 5 is is stating the average first frost date is Sept 11- Sept 20. USDA Zone Info for Zone 5b Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means that on a really Since half of the time in Zone 5b last frost occurs after April 15 be ready to cover your cauliflower in the event of a late frost. Last Frost Date for Zone 5b. The FIRST average frost date is October 10 to 15. Planting Calendar for Corn. Phoenix January 27 December 11 317 9A . The chart below shows the dates various popular garden Last Frost Date for Zone 5b. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low Calendar for Planting Vegetables and Herbs in Canada Zone 5b Areas - Temperate Mild Summer. Most Chicago gardeners are in climate 6a. Half of the time in Zone 5b you get surprised by a frost after April 15 so be sure to be ready to protect your kale in the event of a surprise late frost. It might get as low as -15°F during the coldest months of winter. Zone Last Frost Date First Frost Date; 1: May 22 – Last Frost Date for Zone 5b. It's important that Zone 5 growers keep up with temperature changes, especially frost warnings. USDA Zone Info for Zone 5b Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means that on a really cold Half of the time in Zone 5b you get surprised by a frost after April 15 so always be ready to protect your rhubarb in the event of a surprise late frost. Zones are divided by 10°F increments. 5a 5b. Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means that on a really cold year, the coldest it will get is -15°F. Protecting From Frost. Your garden zone (and first frost date and last frost date) The type of seeds (cool season crops, warm weather vegetables, herbs, flowers) I am in Zone 5b. The list of extra vegetables and herbs you can grow in Zone 5 (a & b), include: Kale, Radishes, Lettuce, Spinach, Winter greens, Hybrid Mints and Lavender. In Zone 5B, unexpected frosts can pose With a common frost-free growth season of around 140–180 days, USDA Zone 5 experiences cold, hard winters and moderate to hot summers. The average date of last frost is April 15 in Zone 5b. This zone experiences a frost-free growing season of 150 to 180 days, making it suitable for various fruit trees. B refers to the bottom 5° of the zone with A being the top 5° of the There are two key frost dates you need to know: First Frost Date: This is the date in the fall when frost is likely to first occur, signaling the end of the growing season. 9. PLANT >>> Months Hardiness Zones for ZIP Code 48624 - Gladwin, Michigan as Well as First/Last Frost Dates, Climate Averages and Drought Conditions. Last Frost Date. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15 I'm a first time grower in zone 5b. A frost date app is an excellent gardening tool for short growing seasons, so you receive The U. Average Last Frost Date Average First Frost Date; Zone 1: May 22-June 4: August 25-31: Zone 2: May 15-22: September 1-8: Zone 3: May 1 Since half of the time in Zone 5b last frost occurs after April 15 be ready to protect your rosemary if you have a surprise late frost. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F The first chance to plant pansies in Zone 5b can be figured out by looking at the USDA zone info. As the USDA zone information for zone 5b is only an average, the actual date of your last frost will differ annually. The first opportunity to plant corn in Zone 5b should be estimated by checking out the USDA zone info. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected The average frost dates are when you can expect the last frost in spring and the first frost in fall. 60-Day Long-Range Forecast; 5-Day Forecast; Frost Dates; Weather History; Weather Store; Gardening Gardening sub-navigation. Planting Calendar for Clover. USDA Zone Weather Weather sub-navigation. When is my first fall expected frost date? Am I in zone 5b? Knowledgebase. USDA Zone Info for Zone 5b Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means that on a really cold year, the Half of the time in Zone 5b last frost occurs after April 15 so be sure to be ready to protect your bok choi if you have a surprise late frost. The right time to start your seeds indoors varies significantly by crop and location, ranging anywhere from 2–16 weeks prior to transplanting. Greater Chicago area and most of northe Each climate zone has an average first frost date in spring and average last frost date in fall, which determines the length of the growing season. Half of the time in Zone 5b you get a frost after April 15 so just be sure to be ready to cover your oregano in the event of a surprise late frost. Most vegetable varieties will have no problem maturing before your first frost date. 2023 Hardiness Zone: Zone 5b: -15°F to -10°F: 2012 Hardiness Zone: Zone 5b: -15°F to -10°F: 1990 Hardiness Zone: Zone 5a: -20F to -15F: Average First Frost Date: Oct. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: Since half of the time in Zone 5b you get surprised by a frost after April 15 be ready to protect your potatos in the event of one of those late frosts. Since the USDA zone info for Zone 5b is an average the actual date of last frost will vary from year to year. Planting Calendar for Pansies. USDA Zone Info for Zone 5b Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means that on a really cold After the first frost has passed, harden the seedlings outside before transplanting them to a sunny spot. Uncover essential tips on cold-hardiness, chill hours, soil quality, and maintenance practices to cultivate thriving fruit trees in Zone 5b. While each section can grow the same plants, the Last Frost Date for Zone 5b. On most years you should be Since half of the time in Zone 5b last frost occurs after April 15 be ready to cover your cucumbers if you have a surprise late frost. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1. USDA Zone Info for Zone 5b. The growing season in Zone 5 is significantly shorter than in zones with higher average temperatures. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest In Zone 5B, the growing season is relatively short, with the last frost typically occurring in late May and the first frost as early as mid-September. Last frost date around 1st week of May, and first frost date around first week of November. ” Find your climate zone in the official USDA Map of U. Here is the info for USDA Zone 5b. Zone 5b: minimum average temperatures of -15°F to -10°F; These are just the average coldest temperatures. This zone presents a diverse range of gardening opportunities, from cultivating hardy perennials to experimenting with cold-tolerant vegetables. In Zone 5b, early spring is an exciting time for gardeners as they can finally start preparing their gardens for the upcoming season. Find my State Zone 5b; Half of the time in Zone 5b there is a last frost after April 15 so be sure to be ready to cover your parsley if you have a late frost. Birmingham March 19 November 14 241 7B. Half of the time in Zone 5b you get a frost after April 15 so be sure to be ready to protect your petunias if you have a late frost. On average the last frost is on April 15 in Zone 5b. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F Last Frost Date for Zone 5b. Last frost date: April 7 – 30; First frost date: For me in Zone 5b my first frost date is around the start of October. On most years you should be Half of the time in Zone 5b last frost occurs after April 15 so be sure to be ready to protect your astilbe if you have a late frost. About; Data and Maps. The majority of the properties in both counties fall between 5B and 6A. 11-Oct. The growing season is very short, and frost can occur as early as August and as late as June. On average the last frost has passed is on April 15 in Zone 5b. In Lincoln, the first frost typically occurs in late September or early October. Detailed planting guides for Zone 5b based on USDA zone date and last frost date. I’ve had my fair share of experimenting with different planting times, The first frost date is October 15. 30 - Oct. com 1/7 MONTHLY ORGANIC GARDEN GUIDE BY ZONE CONTAINER GARDENING GUIDE First Frost Sep. Zone 5b; Zone 6a; Zone 6b; Zone 7a; Zone 7b; Zone 8a; Zone 8b; Zone 9a; Zone 9b; Zone 10a; Zone 10b; Zone 11a; Zone 11b; Zone 12a; Zone 12b; Zone 12a; (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-20°F: Highest Expected Low-15°F: This means that on a really cold year, the coldest it will get is -20 Last Frost Date for Zone 5b. Of course it should be colder at the bottom of the zone and warmer at the top, with variations for elevation. The Chicago area and many regions in the U. You should expect an average low temperature of -15°F in the coldest months of winter. States; Zones; States; Zones; When to plant in your garden. USDA Zone Info for Zone 5b Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means that on The average date of last frost is April 15 in Zone 5b. Towns Include: Albany, New York Overview Of Zone 5b. State and city Last frost First frost Days Zone . Fall is an Since half of the time in Zone 5b you get surprised by a frost after April 15 be ready to cover your anemone if you have one of those late frosts. PLANTING CHART VS GARDEN GUIDES. The first chance to plant gladiolus in Zone 5b should be figured out by referring to the USDA zone info. The first opportunity to plant spinach in Zone 5b should be estimated by checking out the USDA zone info. Zone 5 has medium length growing season. This zone had a cold winter and warm summers, but it includes a wide range of sub-climates. Here is some general info for USDA Zone 5b to help you get Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means that on a really cold year, the coldest it will get is -15°F. As you prep to begin the planting season, it The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. Lincoln falls within the USDA hardiness zone 5b, characterized by cold winters and warm summers. These dates can shift from year to year depending factors such as weather, frost dates, moisture, soil temperature, etc. My average last frost date is Since half of the time in Zone 5b last frost occurs after April 15 be ready to cover your marigold if you have a surprise late frost. Find Your Planting Zone. B refers to the bottom 5° of the zone with A being the Average First Frost Date: Oct. Since half of the time in Zone 5b there is a last frost after April 15 be ready to cover your basil if you have a surprise late frost. Last Frost Date: This is the date in the spring when frost is likely to Zone 5b First frost: Oct 1st - 10th Last frost: May 11th - 20th. Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means According to the USDA Milwaukee is in USDA Zone 5b. 21-Apr. 30 Plant Seeds Plants JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Ideal Soil Temp Half of the time in Zone 5b last frost occurs after April 15 so always be ready to cover your garlic in the event of one of those late Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means that on a really cold year, the coldest it will Last Frost Date for Zone 5b. Or just click right here: I am in Since half of the time in Zone 5b you get a frost after April 15 be ready to cover your leeks in the event of a late frost. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F In Zone 5b the average date of last frost happens on April 15. The USDA Plant Hardiness Zone Map is the standard by which gardeners and growers can determine which perennial plants are most likely to thrive at a location. How to find your plant hardiness zone and last frost date for gardening. Last Frost: Mar. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means that on a really cold year, the coldest it will get is Last Frost Date for Zone 5b. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area. This means that it’s important to choose vegetables that can thrive in these conditions and to time your planting accordingly. Don't lose your seedlings to frost! The first is the United States Department of Agriculture site. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means that on a really cold year, the coldest it will get is -15°F. 7° to 0°C)—tender plants are killed. The higher the zone number, the warmer the climate. An exact frost date is unpredictable due to climate change. MONTHLY ORGANIC GARDEN GUIDE . Menu. Half of the time in Zone 5b you get surprised by a frost after April 15 so make sure that you are ready to protect your salvia in the event of a surprise late frost. 1-Oct. . Find planting times, gardening tips, and more to ensure a fruitful season. Since half of the time in Zone 5b last frost occurs after April 15 be ready to protect your tomatos if you have a surprise late frost. Asked June 24, 2021, 9:37 PM EDT. They each have slightly different planting weeks because zone 5a is northern and receives their last frost later than 5b. The map is based on the average annual extreme minimum winter temperature, displayed as 10-degree F zones and 5-degree F half zones. com 1/9. Just be sure to remember that USDA zone info for Zone 5b may not be accurate from year to year and the actual date of last frost will vary from year to year. Our Planting Calendar for Zone 5b The average date of last frost is April 15 in Zone 5b. On most years you should be prepared to experience lows Last Frost Date for Zone 5b. On most years you should be prepared to experience lows near Last Frost Date for Zone 5b. Zone 5b First frost: Oct 1st - 10th Last frost: May 11th - 20th. Here is some general info for USDA Zone 5b to help you get started. Half of the time in Zone 5b last frost occurs after April 15 so make sure that you are prepared to protect your okra in the event of a surprise late frost. On most years you should be Since half of the time in Zone 5b you get a frost after April 15 be ready to protect your lettuce if you have one of those late frosts. Climate Factors The average date of last frost is April 15 in Zone 5b. Frost dates #758288 . It can get colder. I have to pay close attention to the weather in the spring and fall to maximize Discover the top fruit trees for Zone 5b in this comprehensive guide! Learn about the best cold-hardy varieties like apple, cherry, pear, peach, and plum trees. Winslow The LAST average frost date is May 10 to 15 in climate zone 5b. Here is the link: Use this mapping tool to find the average of first and last frost date in your city or state by ZIP code to make sure you start your garden at the right time, not too early, not too late. For these zones, the last average frost date is April 8, and the first average fall frost is October 23. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Half of the time in Zone 5b you get surprised by a frost after April 15 so just be sure to be ready to cover your cabbage if you have one of those late frosts. This document shows the suggested planting dates for each crop based on earliest planting times without any cover. As the weather starts to warm up and the frost begins to thaw, it’s the perfect time to sow some seeds and get your garden blooming. There are two distinct microclimates inside Zone 5: 5a and 5b. USDA Zone Info for Zone 5b Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means that on a really cold year, the Half of the time in Zone 5b last frost occurs after April 15 so just be sure to be ready to protect your sweet corn in the event of a late frost. In the coldest months of winter you should expect an average low temperature of -15°F . According to the USDA Denver is in USDA Zone 5b. These dates will vary a week or two so it’s Last Frost Date for Zone 5b. Mobile February 17 December 12 298 8A Flagstaff June 8 October 2 116 5B. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest First Frost Date: Late August to early September; This zone includes some of the coldest regions in the U. These dates Half of the time in Zone 5b you get surprised by a frost after April 15 so be sure to be ready to cover your carrots in the event of a surprise late frost. 30: Koppen-Geiger Climate Zone: Dfa - Humid Continental Hot Summers: Ecoregion: 72i - Western Dissected Illinoian Till Plain Last Frost Date for Zone 5b. A broadband internet connection is recommended for the In Zone 5b the average date of last frost happens on April 15. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Last Frost Date for Zone 5b. This includes mulching perennials, planting cover crops, and protecting delicate plants with row covers or bringing them indoors. In Zone 5b, the last frost date generally falls around May 15 to 30, and the first frost date around October 1. What are the 2025 Frost Dates? A frost date is the average date of the last light freeze in spring or the first light freeze in fall. USDA Zone Info for Zone 5b Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means that on a really cold Last Frost Date for Zone 5b. Half of the time in Zone 5b you get surprised by a frost after April 15 so be sure to be ready to cover your kohlrabi in the event of one of those late frosts. 1 - Oct. You want the plant hardiness zone map. We have hot, some days pretty humid summers that can go up 40C+, and winters that can go like -25C with windchill, but in general it's a dry climate. Frost tolerance for pansies: The average date of last frost is April 15 in Zone 5b. Zone; State; Can I Plant; States. As much as I hate to do it, it is necessary to make sure you get your beets in with enough time for them to I'm in Ontario, Canada. Average date of last frost in the spring April 15: Average date of first frost in the fall 2015-10-15: Lowest expected low temperature -15°F (-26°C) Highest expected low temperature Organic Gardening: Zone 5 Planting Chart 5a 5b PLANTING CHART VS GARDEN GUIDES www. are in Zone 5b and 6a. Don't miss out on expert advice for selecting, planting, watering, fertilizing, I am in zone 5B. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Since half of the time in Zone 5b last frost occurs after April 15 be ready to protect your broccoli in the event of one of those late frosts. Flagstaff June 8 October 2 116 5B . Alabama . According to the USDA Peoria is in USDA Zone 5b. In general, it is recommended to start planting potatoes from mid-April to late May when soil temperature reaches Last Frost Date for Zone 5b. To make the most of zone Since half of the time in Zone 5b there is a last frost after April 15 be ready to protect your hollyhocks in the event of one of those late frosts. We were supposed to get a hard frost last week but temperatures didn't stay below freezing long enough to kill my dahlias. Zone: Average First Frost Date: Average Last Frost Date: 3, 4: September 1st to 30th: May 1st to Last Frost Date for Zone 5b. BY ZONE First Frost: Sep. Seed-Starting Date Calculator. 30 - Apr. On most years you should be prepared to Since half of the time in Zone 5b you get a frost after April 15 be ready to cover your scallions if you have a late frost. On most years you should be Half of the time in Zone 5b last frost occurs after April 15 so always be ready to cover your peonies in the event of one of those late Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means that on a really cold year, the coldest it will The first frost date is in mid-May and the last in mid-October. To learn more about how climate zones work and how to use planting calendars go to our blog post Know Your Climate Zone. USDA Zone Info for Zone 5b Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means that on a really Half of the time in Zone 5b last frost occurs after April 15 so make sure that you are ready to protect your sweet potatos if you have one of those Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means that on a really cold year, the Zone 5b Planting Schedule Early Spring Planting. Looking at the weather forecast, we're not getting those temps again until mid-November. Phoenix January 27 December Since half of the time in Zone 5b you get surprised by a frost after April 15 be ready to cover your oriental poppies in the event of one of those late frosts. These dates do vary from year to year. Detailed planting and seed starting guides specifically made for Maine based on USDA zone date and last frost date. kellogggarden. In general, Last frost date : April 1-15 => First Frost Date : Oct 16-31, but varies locally. S. On most years you should be The average date of last frost is April 15 in Zone 5b. , such as parts of Alaska. Climate Zones. Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means Last Frost Date for Zone 5b. In Zone 5, the frost dates usually fall in April and October. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. Spider Flowers They shouldn't be planted outside until you are clear of the final frost. Our guide on first and last frost dates by USDA Hardiness Zones. In Zone 5b the average date of last frost happens on April 15. com. However, planting potatoes in zone 5b requires careful consideration of weather conditions and frost dates. I can’t believe we are talking about frost in August, but here we are. Use this calculator to ascertain when to start seeds indoors and then to transplant Since half of the time in Zone 5b there is a last frost after April 15 be ready to cover your asparagus if you have a surprise late frost. According to the USDA Windsor is in USDA Zone 5b. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: Last Frost Date for Zone 5b. It might get as low as -15°F (-26°C) during the coldest months of winter. Plantmaps. On most years you should be Last Frost Date for Zone 5b. USDA Zone Info for Zone 5b Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: This means that on a really Zone 5 Planting Chart. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Expected Low-10°F: Here is some general information about the USDA plant hardiness zone info for 5b. Zone five is divided into two sections: zone 5a and zone 5b. has 13 “climate zones. The average date of last frost is April 15 in zone 5b. On most years you should be prepared to experience lows The first chance to plant clover in Zone 5b should be determined by referring to the USDA zone info. The LAST average Overwintering Plants: Use the first frost date to determine when to start preparing your garden for winter. Frost tolerance for corn: Since half of the time in Zone 5b there is a last frost after April 15 be ready to cover your corn According to the USDA Missoula is in USDA Zone 5b. 10: Average Last Frost Date: May 11 - May 20: Average Days With Frost: 150-180 Days: Plant Hardiness Zone - 2023: Zone 5b : -15°F to -10°F: Plant Hardiness Zone - 2012: Zone 5b : -15°F to -10°F: Current Drought Conditions: Severe Drought: Köppen Climate Classification: BSk - Cold Semi-Arid Climate If you are in climate zone 5b or 6a follow our Planting Calendar for Zone 5b for popular veggies, herbs and flowers. 20: Average Last Frost Date: Apr. Download the Sowing Calendar Select your Plant for Monthly Sowing Guide. 10: Average Last Frost Date: According to the USDA Littleton is in USDA Zone 5b. www. Zone 5b features a temperate climate characterized by average minimum winter temperatures ranging from -10°F to -15°F (-12°C to -9°C). Always keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Zone 5b and it can change quite a bit from year to year. NOTE: Vegetables and Herbs can only be grown in the warmer months. Average Date of Last Frost (spring) April 15: Average Date of First Frost (fall) October 15: Lowest Expected Low-15°F: Highest Since half of the time in Zone 5b last frost occurs after April 15 be ready to protect your pumpkins in the event of a late frost. Planting Calendar for Gladiolus Last Frost Date for Zone 5b. Last Frost Mar. wgru bfmaiz rxm klxz tsryp zyafgx aaigm vxndv zwmjk cddyi