Randolph County, IL — Planting Guide
Randolph County is in USDA Zone 7a. The average last spring frost is April 11 and the first fall frost is October 20, giving you a growing season of approximately 192 days.
At an elevation of 501 ft, Randolph County receives approximately 32.8 in of rainfall annually. Summer highs average 86°F with winter lows around 26°F. The predominant soil type is Silt Loam.
🌡️ Zone
7a (0°F to 5°F min)
❄️ Last Frost
April 11
🍂 First Frost
October 20
📅 Growing Season
192 days
⛰️ Elevation
501 ft
🌧️ Annual Rainfall
32.8 in
Randolph County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Soil & Growing Conditions in Randolph County
Soil Type
Silt Loam
Ideal for most crops — holds moisture and nutrients while draining well.
Watering Needs
Moderate rainfall (32.8 in.) — plan to water 1–2 times per week during the growing season.
Season Tips
192-day frost-free season
Plenty of time for warm-season crops. Start heat-lovers indoors 6–8 weeks before last frost to maximise your harvest window.
Your Free Printable Garden Planner
Plan every bed, every planting, every harvest — in one place. This 22-page printable includes your zone's planting calendar, a month-by-month task list, a seed inventory tracker, a harvest log, and succession-planting charts. Built to print, write in, and actually use all season.
Recommended for Your Garden
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Get instant, accurate soil pH readings to fine-tune your amendments.
Boost soil fertility and structure with rich, well-aged organic compost.
🥬 Vegetables to Grow in Randolph County
112 vegetables that grow well in Zone 7a with planting dates for Randolph County.
Show all 112 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Mar 14 | Apr 18 | Apr 25 | — | Jul 18 – Aug 22 | 80–100 |
| Amaranth | Feb 21 | Apr 18 | Apr 25 | — | Jul 25 – Sep 12 | 90–120 |
| Artichoke | — | — | Apr 25 | — | Aug 29 – Nov 7 | 120–180 |
| Arugula | Mar 7 | Mar 28 | Apr 11 | Aug 11 | May 16 – Jul 18 | 30–50 |
| Asparagus | — | — | Apr 25 | — | — | 730–1095 |
| Beets | — | Mar 28 | — | Aug 11 | May 23 – Jun 20 | 50–70 |
| Belgian Endive | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Aug 1 – Sep 26 | 110–150 |
| Bitter Melon | Feb 21 | Apr 18 | Apr 25 | — | Jun 27 – Aug 8 | 60–90 |
| Black Beans | — | Apr 18 | — | — | Jul 18 – Sep 5 | 90–120 |
| Bok Choy | Mar 7 | Mar 28 | Apr 11 | Aug 11 | May 23 – Jun 27 | 40–60 |
| Broccoli | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 13 – Jul 25 | 60–90 |
| Broccoli Rabe | Mar 7 | Mar 28 | Apr 11 | Aug 11 | May 23 – Jun 27 | 40–60 |
| Brussels Sprouts | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jul 11 – Sep 5 | 90–130 |
| Butternut Squash | Mar 14 | Apr 18 | Apr 25 | — | Jul 25 – Aug 29 | 85–110 |
| Cabbage | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 13 – Aug 8 | 60–100 |
| Calabash | Feb 21 | Apr 18 | Apr 25 | — | Jul 18 – Sep 12 | 80–120 |
| Cardoon | — | — | Apr 25 | — | Aug 29 – Oct 10 | 120–150 |
| Carrots | — | Mar 28 | — | Aug 11 | May 30 – Jul 4 | 60–80 |
| Cauliflower | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 6 – Aug 8 | 55–100 |
| Celeriac | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jul 25 – Aug 29 | 100–120 |
| Celery | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jul 4 – Aug 29 | 80–120 |
| Celtuce | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 13 – Jul 25 | 60–90 |
| Chard | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 6 – Jul 25 | 50–60 |
| Chayote | Feb 21 | Apr 18 | Apr 25 | — | Aug 29 – Nov 7 | 120–180 |
| Chickpeas | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jul 4 – Aug 15 | 80–110 |
| Chicory | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 13 – Jul 25 | 60–85 |
| Chinese Cabbage | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 6 – Jul 4 | 50–70 |
| Christmas Lima Beans | Feb 21 | Apr 18 | Apr 25 | — | Jul 18 – Aug 22 | 80–100 |
| Collard Greens | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 6 – Aug 8 | 55–75 |
| Corn | — | Apr 18 | — | — | Jun 20 – Aug 15 | 60–100 |
| Cowpeas | — | Apr 18 | — | — | Jun 20 – Aug 1 | 60–90 |
| Cress | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Apr 25 – May 16 | 14–21 |
| Crookneck Squash | Mar 14 | Apr 18 | Apr 25 | — | Jun 13 – Jul 11 | 45–60 |
| Crosne | — | Mar 28 | — | Aug 11 | Aug 29 – Oct 31 | 150–200 |
| Cucumber | Mar 14 | Apr 18 | Apr 25 | — | Jun 20 – Aug 15 | 50–70 |
| Daikon | — | Mar 28 | — | Aug 11 | May 23 – Jun 20 | 50–70 |
| Delicata Squash | Mar 14 | Apr 18 | Apr 25 | — | Jul 18 – Aug 22 | 80–100 |
| Edamame | — | Apr 18 | — | — | Jul 4 – Aug 15 | 75–100 |
| Eggplant | Feb 7 | Apr 18 | Apr 25 | — | Jul 4 – Sep 5 | 65–85 |
| Endive | Mar 7 | Mar 28 | Apr 11 | Aug 11 | May 30 – Jul 4 | 45–65 |
| Escarole | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 6 – Jul 4 | 50–70 |
| Fava Beans | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 27 – Aug 8 | 75–100 |
| Fennel | Feb 21 | Apr 18 | Apr 25 | — | Jun 27 – Aug 8 | 60–90 |
| Garlic | — | — | — | Sep 8 | Dec 8 – Apr 20 | 90–240 |
| Green Beans | — | Apr 18 | — | — | Jun 13 – Aug 8 | 50–65 |
| Horseradish | — | — | Apr 25 | — | Aug 29 – Nov 7 | 120–180 |
| Hot Peppers | Feb 7 | Apr 18 | Apr 25 | — | Jul 4 – Oct 10 | 70–120 |
| Hubbard Squash | Mar 14 | Apr 18 | Apr 25 | — | Aug 8 – Sep 12 | 100–120 |
| Jicama | Feb 21 | Apr 18 | Apr 25 | — | Aug 29 – Nov 7 | 120–180 |
| Kabocha | Mar 14 | Apr 18 | Apr 25 | — | Jul 25 – Aug 22 | 85–100 |
| Kai Lan | Mar 7 | Mar 28 | Apr 11 | Aug 11 | May 30 – Jun 27 | 45–60 |
| Kale | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 6 – Aug 1 | 50–70 |
| Kidney Beans | — | Apr 18 | — | — | Jul 18 – Aug 22 | 85–110 |
| Kohlrabi | Mar 7 | Mar 28 | Apr 11 | Aug 11 | May 30 – Jul 4 | 45–65 |
| Komatsuna | Mar 7 | Mar 28 | Apr 11 | Aug 11 | May 16 – Jun 20 | 35–50 |
| Leeks | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jul 11 – Sep 26 | 90–150 |
| Lentils | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jul 4 – Aug 15 | 80–110 |
| Lettuce | Mar 7 | Mar 28 | Apr 11 | Aug 11 | May 16 – Jul 25 | 30–60 |
| Lima Beans | — | Apr 18 | — | — | Jun 20 – Aug 1 | 60–90 |
| Loofah | Feb 21 | Apr 18 | Apr 25 | — | Aug 8 – Oct 10 | 100–150 |
| Luffa | Feb 21 | Apr 18 | Apr 25 | — | Jul 25 – Oct 10 | 90–150 |
| Mache | Mar 7 | Mar 28 | Apr 11 | Aug 11 | May 23 – Jun 27 | 40–60 |
| Malabar Spinach | Feb 21 | Apr 18 | Apr 25 | — | Jun 20 – Jul 18 | 55–70 |
| Melon | Mar 14 | Apr 18 | Apr 25 | — | Jul 4 – Aug 22 | 70–100 |
| Microgreens | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Apr 18 – May 16 | 7–21 |
| Mitsuba | Mar 7 | Mar 28 | Apr 4 | Aug 11 | May 30 – Jul 25 | 50–70 |
| Mizuna | Mar 7 | Mar 28 | Apr 11 | Aug 11 | May 16 – Jun 13 | 30–45 |
| Mustard Greens | Mar 7 | Mar 28 | Apr 11 | Aug 11 | May 16 – Jul 18 | 30–50 |
| Napa Cabbage | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 6 – Jul 11 | 55–75 |
| New Zealand Spinach | Feb 21 | Apr 18 | Apr 25 | — | Jun 20 – Jul 18 | 55–70 |
| Okra | Feb 21 | Apr 18 | Apr 25 | — | Jun 20 – Aug 15 | 50–65 |
| Onion | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jul 11 – Aug 29 | 90–120 |
| Pac Choi | Mar 7 | Mar 28 | Apr 11 | Aug 11 | May 23 – Jun 20 | 40–55 |
| Parsnip | — | Mar 28 | — | Aug 11 | Jul 11 – Aug 22 | 100–130 |
| Patty Pan Squash | Mar 14 | Apr 18 | Apr 25 | — | Jun 13 – Jul 11 | 45–60 |
| Peas | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 6 – Aug 1 | 55–70 |
| Peppers | Feb 7 | Apr 18 | Apr 25 | — | Jun 27 – Sep 5 | 60–90 |
| Pole Beans | Feb 21 | Apr 18 | Apr 25 | — | Jun 20 – Aug 15 | 55–70 |
| Potatoes | Feb 21 | Apr 18 | Apr 25 | — | Jul 4 – Sep 12 | 70–120 |
| Pumpkin | Mar 14 | Apr 18 | Apr 25 | — | Jul 25 – Sep 12 | 85–120 |
| Purslane | Mar 7 | Mar 28 | Apr 11 | Aug 11 | May 23 – Jun 27 | 40–60 |
| Radicchio | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 13 – Jul 18 | 60–80 |
| Radish | — | Mar 28 | — | Aug 11 | Apr 25 – May 16 | 22–35 |
| Rhubarb | — | — | May 2 | — | — | 365–730 |
| Romanesco | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 27 – Aug 8 | 75–100 |
| Rutabaga | — | Mar 28 | — | Aug 11 | Jun 20 – Jul 25 | 80–100 |
| Salsify | — | Mar 28 | — | Aug 11 | Jul 11 – Aug 22 | 100–130 |
| Savoy Cabbage | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 20 – Aug 15 | 70–110 |
| Scallions | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 6 – Jul 4 | 50–70 |
| Scarlet Runner Beans | Feb 21 | Apr 18 | Apr 25 | — | Jun 27 – Aug 1 | 60–80 |
| Shallot | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jul 11 – Aug 29 | 90–120 |
| Shiso | Feb 21 | Apr 18 | Apr 25 | — | Jun 20 – Aug 15 | 50–70 |
| Snap Peas | Feb 21 | Apr 18 | Apr 25 | — | Jun 20 – Aug 15 | 55–70 |
| Snow Peas | Mar 7 | Mar 28 | Apr 11 | Aug 11 | Jun 6 – Aug 1 | 50–65 |
| Soybeans | — | Apr 18 | — | — | Jul 11 – Sep 5 | 80–120 |
| Spaghetti Squash | Mar 14 | Apr 18 | Apr 25 | — | Jul 25 – Aug 22 | 85–100 |
| Spinach | Mar 7 | Mar 28 | Apr 11 | Aug 11 | May 16 – Jul 18 | 35–50 |
| Squash (Summer) | Mar 14 | Apr 18 | Apr 25 | — | Jun 13 – Aug 15 | 45–65 |
| Squash (Winter) | Mar 14 | Apr 18 | Apr 25 | — | Jul 18 – Sep 12 | 80–120 |
| Sunchoke | — | — | Apr 25 | — | Aug 15 – Oct 10 | 110–150 |
| Sweet Corn | — | Apr 18 | — | — | Jun 20 – Aug 1 | 60–90 |
| Sweet Potatoes | Feb 21 | Apr 18 | Apr 25 | — | Jul 25 – Sep 12 | 90–120 |
| Tatsoi | Mar 7 | Mar 28 | Apr 11 | Aug 11 | May 16 – Jun 20 | 35–50 |
| Tomatillo | Feb 21 | Apr 18 | Apr 25 | — | Jun 27 – Sep 5 | 60–85 |
| Tomatoes | Feb 21 | Apr 18 | Apr 25 | — | Jun 27 – Sep 5 | 60–85 |
| Turnip | — | Mar 28 | — | Aug 11 | May 9 – Jun 13 | 40–60 |
| Watercress | Mar 7 | Mar 28 | Apr 11 | Aug 11 | May 23 – Jun 27 | 40–60 |
| Watermelon | Mar 14 | Apr 18 | Apr 25 | — | Jul 4 – Aug 22 | 70–100 |
| Wax Beans | — | Apr 18 | — | — | Jun 13 – Aug 8 | 50–65 |
| Winter Melon | Feb 21 | Apr 18 | Apr 25 | — | Jul 25 – Sep 12 | 90–120 |
| Yard Long Beans | Feb 21 | Apr 18 | Apr 25 | — | Jun 20 – Aug 1 | 55–80 |
| Zucchini | Mar 14 | Apr 18 | Apr 25 | — | Jun 13 – Aug 8 | 45–60 |
🍓 Fruits to Grow in Randolph County
31 fruits that grow well in Zone 7a with planting dates for Randolph County.
Show all 31 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | May 2 | — | Aug 1 – Nov 14 | 90–180 |
| Aronia | — | — | May 2 | — | — | 730–1095 |
| Blackberries | — | — | May 2 | — | — | 365–730 |
| Blueberries | — | — | May 2 | — | — | 730–1095 |
| Boysenberries | — | — | May 2 | — | — | 365–730 |
| Cantaloupe | — | — | May 2 | — | Jul 11 – Aug 15 | 70–90 |
| Che Fruit | — | — | May 2 | — | — | 1095–1825 |
| Cranberries | — | — | May 2 | — | — | 730–1095 |
| Currants | — | — | May 2 | — | — | 730–1095 |
| Elderberries | — | — | May 2 | — | — | 730–1095 |
| Figs | — | — | May 2 | — | — | 730–1825 |
| Goji Berries | — | — | May 2 | — | — | 730–1095 |
| Gooseberries | — | — | May 2 | — | — | 730–1095 |
| Grapes | — | — | May 2 | — | — | 730–1095 |
| Ground Cherry | — | — | May 2 | — | Jul 11 – Sep 5 | 65–80 |
| Hardy Kiwi | — | — | May 2 | — | — | 1095–1825 |
| Haskaps | — | — | May 2 | — | — | 730–1095 |
| Honeydew | — | — | May 2 | — | Jul 25 – Sep 5 | 80–110 |
| Jostaberry | — | — | May 2 | — | — | 730–1095 |
| Kiwi | — | — | May 2 | — | — | 1095–1825 |
| Lingonberries | — | — | May 2 | — | — | 730–1095 |
| Loquat | — | — | May 2 | — | — | 730–1825 |
| Medlar | — | — | May 2 | — | — | 1095–1825 |
| Mulberries | — | — | May 2 | — | — | 730–1825 |
| Pawpaw | — | — | May 2 | — | — | 1095–2555 |
| Persimmon | — | — | May 2 | — | — | 1095–2555 |
| Pomegranate | — | — | May 2 | — | — | 730–1095 |
| Quince | — | — | May 2 | — | — | 1095–1825 |
| Raspberries | — | — | May 2 | — | — | 365–730 |
| Serviceberries | — | — | May 2 | — | — | 730–1095 |
| Strawberries | — | — | May 2 | — | Aug 1 – Dec 12 | 90–365 |
🌿 Herbs to Grow in Randolph County
36 herbs that grow well in Zone 7a with planting dates for Randolph County.
Show all 36 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Mar 7 | Mar 28 | Apr 4 | Aug 11 | — | 365–730 |
| Anise | Mar 7 | Mar 28 | Apr 4 | Aug 11 | Jul 4 – Sep 19 | 90–120 |
| Basil | Feb 21 | Apr 18 | Apr 25 | — | Jun 20 – Aug 22 | 50–75 |
| Bee Balm | — | — | Apr 18 | — | Jul 18 – Oct 3 | 90–120 |
| Borage | Mar 7 | Mar 28 | Apr 4 | Aug 11 | May 30 – Jul 18 | 50–60 |
| Caraway | Mar 7 | Mar 28 | Apr 4 | Aug 11 | — | 365–450 |
| Catnip | — | — | Apr 18 | — | Jun 20 – Aug 22 | 60–80 |
| Chamomile | Mar 7 | Mar 28 | Apr 4 | Aug 11 | Jun 6 – Aug 15 | 60–90 |
| Chervil | Mar 7 | Mar 28 | Apr 4 | Aug 11 | May 16 – Jul 18 | 40–60 |
| Chives | — | — | Apr 18 | — | Jun 20 – Aug 29 | 60–90 |
| Cilantro | Mar 7 | Mar 28 | Apr 4 | Aug 11 | May 16 – Jul 18 | 40–60 |
| Comfrey | — | — | Apr 18 | — | Jun 20 – Aug 29 | 60–90 |
| Cumin | Mar 7 | Mar 28 | Apr 4 | Aug 11 | Jul 18 – Sep 19 | 100–120 |
| Dill | Mar 7 | Mar 28 | Apr 4 | Aug 11 | May 16 – Jul 18 | 40–60 |
| Epazote | Feb 21 | Apr 18 | Apr 25 | — | Jun 13 – Aug 8 | 45–60 |
| Fennel (herb) | Mar 7 | Mar 28 | Apr 4 | Aug 11 | Jun 6 – Aug 15 | 60–90 |
| Feverfew | — | — | Apr 18 | — | Jul 18 – Oct 3 | 90–120 |
| Garlic Chives | — | — | Apr 18 | — | Jun 20 – Aug 29 | 60–90 |
| Horehound | — | — | Apr 18 | — | Jul 4 – Aug 29 | 75–90 |
| Hyssop | — | — | Apr 18 | — | Jun 27 – Aug 29 | 70–90 |
| Lemon Balm | — | — | Apr 18 | — | Jun 20 – Aug 8 | 60–70 |
| Lemon Thyme | — | — | Apr 18 | — | Jun 27 – Aug 29 | 70–90 |
| Lovage | — | — | Apr 18 | — | Jun 27 – Aug 29 | 70–90 |
| Marjoram | — | — | Apr 18 | — | Jun 20 – Aug 29 | 60–90 |
| Mint | — | — | Apr 18 | — | Jun 20 – Aug 29 | 60–90 |
| Oregano | — | — | Apr 18 | — | Jun 20 – Aug 29 | 60–90 |
| Parsley | Mar 7 | Mar 28 | Apr 4 | Aug 11 | Jun 6 – Aug 8 | 60–80 |
| Rosemary | — | — | Apr 18 | — | Jul 11 – Nov 28 | 80–180 |
| Rue | — | — | Apr 18 | — | Jun 27 – Aug 29 | 70–90 |
| Sage | — | — | Apr 18 | — | Jul 4 – Aug 29 | 75–90 |
| Savory | — | — | Apr 18 | — | Jun 13 – Aug 8 | 50–70 |
| Sorrel | Mar 7 | Mar 28 | Apr 4 | Aug 11 | May 16 – Jul 18 | 40–60 |
| Tarragon | — | — | Apr 18 | — | Jun 20 – Aug 29 | 60–90 |
| Thai Basil | Feb 21 | Apr 18 | Apr 25 | — | Jun 20 – Aug 22 | 50–75 |
| Thyme | — | — | Apr 18 | — | Jun 27 – Aug 29 | 70–90 |
| Valerian | — | — | Apr 18 | — | Aug 22 – Nov 28 | 120–180 |
🌸 Flowers to Grow in Randolph County
53 flowers that grow well in Zone 7a with planting dates for Randolph County.
Show all 53 flowers with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Feb 28 | Apr 11 | Apr 11 | — | Jun 6 – Sep 26 | 60–75 |
| Alliums | — | — | — | Sep 15 | Oct 13 – Nov 3 | 28–42 |
| Anemones | — | — | — | Aug 25 | Sep 8 – Oct 6 | 90–120 |
| Astilbe | Feb 7 | — | Apr 18 | — | Jun 27 – Aug 22 | 70–100 |
| Bachelor's Button | Feb 28 | Mar 7 | Apr 11 | Aug 25 | Jun 13 – Sep 12 | 60–90 |
| Begonias | Jan 31 | — | Apr 11 | — | Jun 20 – Oct 10 | 70–90 |
| Black-eyed Susan | Feb 7 | Apr 11 | Apr 18 | — | Jun 27 – Oct 31 | 60–80 |
| Bleeding Hearts | Feb 7 | — | Apr 18 | — | Jun 6 – Jul 11 | 60–90 |
| Calendula | Feb 28 | Mar 7 | Apr 11 | Aug 25 | May 30 – Sep 12 | 50–70 |
| California Poppy | — | Mar 14 | — | Aug 25 | May 23 – Aug 1 | 60–90 |
| Celosia | Mar 14 | Apr 11 | Apr 11 | — | Jun 13 – Oct 10 | 60–90 |
| Columbine | Feb 14 | Apr 18 | Apr 18 | — | Jun 6 – Jul 11 | 70–100 |
| Coreopsis | Feb 7 | Apr 11 | Apr 18 | — | Jun 20 – Oct 31 | 60–80 |
| Cosmos | Mar 14 | Apr 11 | Apr 11 | — | Jun 20 – Oct 10 | 60–90 |
| Crocus | — | — | — | Sep 15 | Aug 11 – Sep 1 | 10–20 |
| Daffodils | — | — | — | Sep 15 | Aug 18 – Sep 8 | 20–40 |
| Dahlias | Mar 14 | Apr 18 | Apr 18 | — | Jun 27 – Oct 31 | 70–120 |
| Daylily | Feb 7 | — | Apr 18 | — | Jun 27 – Oct 31 | 60–90 |
| Dianthus | Feb 14 | Mar 7 | Mar 21 | — | May 9 – Aug 8 | 60–80 |
| Echinacea (Purple Coneflower) | Feb 7 | Apr 18 | Apr 18 | — | Jul 4 – Oct 31 | 70–90 |
| Foxglove | Feb 14 | Apr 18 | Apr 18 | — | Jun 6 – Jul 11 | 80–120 |
| Gaillardia (Blanket Flower) | Feb 21 | Apr 18 | Apr 18 | — | Jun 27 – Nov 14 | 70–100 |
| Geraniums | Jan 31 | — | Apr 11 | — | Jun 20 – Oct 10 | 70–100 |
| Gladiolus | — | Apr 11 | Apr 11 | — | Jun 20 – Oct 24 | 70–100 |
| Hostas | Jan 31 | — | Apr 18 | — | Jun 27 – Oct 31 | 60–90 |
| Hyacinths | — | — | — | Sep 15 | Sep 8 – Sep 29 | 14–28 |
| Hydrangeas | Jan 31 | — | Apr 18 | — | Jun 27 – Oct 17 | 90–150 |
| Impatiens | Feb 14 | — | Apr 18 | — | Jun 27 – Oct 17 | 60–75 |
| Irises | — | Division | Apr 18 | — | Jun 6 – Jul 11 | 60–100 |
| Larkspur | — | Mar 14 | — | Aug 11 | May 23 – Aug 1 | 60–90 |
| Lavender | Feb 7 | — | Apr 25 | — | Jul 4 – Sep 12 | 90–120 |
| Lilies | — | Division | Apr 18 | — | Jun 27 – Oct 17 | 70–120 |
| Lobelia | Feb 7 | — | Mar 21 | — | May 16 – Aug 8 | 70–80 |
| Lupine | Feb 14 | Apr 18 | Apr 18 | — | Jun 6 – Jul 11 | 75–100 |
| Marigolds | Feb 28 | Apr 11 | Apr 11 | — | Jun 6 – Sep 12 | 50–70 |
| Nasturtium | Mar 14 | Apr 11 | Apr 11 | — | Jun 6 – Oct 10 | 55–65 |
| Pansy | Jan 31 | — | Apr 11 | Aug 11 | Jun 6 – Aug 15 | 70–90 |
| Peonies | — | Division | Apr 18 | — | Jun 13 – Jul 18 | 90–120 |
| Petunia | Feb 14 | — | Apr 18 | — | Jun 27 – Oct 17 | 70–90 |
| Phlox | Feb 7 | Apr 18 | Apr 18 | — | Jun 27 – Sep 19 | 80–110 |
| Portulaca | Mar 14 | Apr 11 | Apr 11 | — | May 30 – Sep 26 | 50–70 |
| Ranunculus | — | — | — | Aug 25 | Sep 22 – Oct 20 | 90–120 |
| Roses | Jan 31 | — | Apr 18 | — | Jun 27 – Oct 31 | 90–180 |
| Salvia | Feb 14 | — | Apr 11 | — | Jun 20 – Oct 10 | 70–90 |
| Sedum (Stonecrop) | Feb 7 | — | Apr 18 | — | Aug 8 – Oct 31 | 60–90 |
| Snapdragon | Jan 31 | Mar 14 | Apr 11 | Aug 25 | Jun 20 – Sep 12 | 70–100 |
| Sunflower | Mar 21 | Apr 11 | Apr 11 | — | Jul 4 – Oct 10 | 70–100 |
| Sweet Alyssum | Feb 28 | Mar 14 | Apr 11 | Sep 8 | May 23 – Aug 15 | 45–60 |
| Sweet Pea | — | Mar 7 | — | Aug 25 | May 16 – Aug 8 | 65–85 |
| Tulips | — | — | — | Sep 15 | Sep 1 – Sep 22 | 15–30 |
| Vinca (Annual) | Jan 31 | — | Apr 11 | — | Jun 20 – Oct 10 | 70–90 |
| Yarrow | Feb 7 | Apr 11 | Apr 18 | — | Jun 20 – Oct 31 | 60–90 |
| Zinnia | Mar 14 | Apr 11 | Apr 11 | — | Jun 20 – Oct 10 | 60–70 |
Monthly Planting Guide for Randolph County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Randolph County.
Frequently Asked Questions
What planting zone is Randolph County, IL?
Randolph County is in USDA Hardiness Zone 7a. This zone classification determines which perennial plants survive winter and sets the baseline for frost timing across the county.
When is the last frost in Randolph County, IL?
Based on 30 years of NOAA weather station data, the median last spring frost in Randolph County falls around April 11. Plan transplants and direct-sow dates relative to this date.
When is the first fall frost in Randolph County, IL?
The median first fall frost in Randolph County arrives around October 20. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
Your Randolph County Garden Planner — Free
A 22-page printable planner built for Randolph County (Zone 7a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.
The Gardener's Encyclopedia to Companion Planting
The pairings that make vegetables, herbs, and flowers grow better — and the ones that quietly wreck a bed.
- Proven pairings for 200+ vegetables, herbs, flowers, and fruits
- Full seed-starting + planting schedule with timing and spacing
- Bonus: square-foot gardening guide + printable seasonal planners
Seed Saving & Storage Guide
Most saved seeds go bad before next season. This shows exactly when to pick, how to dry, and where to store seeds from 200 plants so yours don't.
- 200 plants, step-by-step: life cycle, pollination type, isolation
- Exact temperature + humidity ranges that keep seeds viable
- Bonus: searchable Google Sheets tracker + custom GPT assistant
Composting Guide for Homesteaders
Turn kitchen scraps and yard waste into compost that actually feeds the garden — instead of a pile that smells, attracts pests, and never breaks down.
- 14 sections on composting methods, soil science, and troubleshooting
- The 7-step hot-compost system from start to finish
- Bonus tools: troubleshooting chart, safety guide, monitoring log