Adams County, IA — Planting Guide
Adams County is in USDA Zone 5b. The average last spring frost is April 24 and the first fall frost is October 11, giving you a growing season of approximately 170 days.
At an elevation of 998 ft, Adams County receives approximately 32.1 in of rainfall annually. Summer highs average 86°F with winter lows around 15°F. The predominant soil type is Silt Loam.
🌡️ Zone
5b (-15°F to -10°F min)
❄️ Last Frost
April 24
🍂 First Frost
October 11
📅 Growing Season
170 days
⛰️ Elevation
998 ft
🌧️ Annual Rainfall
32.1 in
Adams County, IA
Moderate season
170 days
Last Spring Frost
April 24
➔
170 growing days
➔
First Fall Frost
October 11
Adams County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Zone 5b
Frost Countdown
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Last Frost: Apr 24
First Frost: Oct 11
Soil & Growing Conditions in Adams County
Soil Type
Silt Loam
Ideal for most crops — holds moisture and nutrients while draining well.
Watering Needs
Moderate rainfall (32.1 in.) — plan to water 1–2 times per week during the growing season.
Season Tips
170-day frost-free season
Start warm-season crops indoors and focus on short-season varieties. Cold frames extend your season by 3–4 weeks in fall.
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
Soil Test Kit
$12-25
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Digital pH Meter
$10-20
Get instant, accurate soil pH readings to fine-tune your amendments.
Organic Compost
$8-30
Boost soil fertility and structure with rich, well-aged organic compost.
🥬 Vegetables to Grow in Adams County
105 vegetables that grow well in Zone 5b with planting dates for Adams County.
Show all 105 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Mar 20 | May 1 | May 8 | — | Jul 31 – Sep 4 | 80–100 |
| Amaranth | Feb 27 | May 1 | May 8 | — | Aug 7 – Sep 25 | 90–120 |
| Arugula | Mar 20 | Apr 10 | Apr 24 | Aug 2 | May 29 – Jul 31 | 30–50 |
| Asparagus | — | — | May 8 | — | — | 730–1095 |
| Beets | — | Apr 10 | — | Aug 2 | Jun 5 – Jul 3 | 50–70 |
| Belgian Endive | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Aug 14 – Oct 9 | 110–150 |
| Bitter Melon | Feb 27 | May 1 | May 8 | — | Jul 10 – Aug 21 | 60–90 |
| Black Beans | — | May 1 | — | — | Jul 31 – Sep 18 | 90–120 |
| Bok Choy | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 5 – Jul 10 | 40–60 |
| Broccoli | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 26 – Aug 7 | 60–90 |
| Broccoli Rabe | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 5 – Jul 10 | 40–60 |
| Brussels Sprouts | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jul 24 – Sep 18 | 90–130 |
| Butternut Squash | Mar 20 | May 1 | May 8 | — | Aug 7 – Sep 11 | 85–110 |
| Cabbage | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 26 – Aug 21 | 60–100 |
| Calabash | Feb 27 | May 1 | May 8 | — | Jul 31 – Sep 25 | 80–120 |
| Carrots | — | Apr 10 | — | Aug 2 | Jun 12 – Jul 17 | 60–80 |
| Cauliflower | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 19 – Aug 21 | 55–100 |
| Celeriac | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Aug 7 – Sep 11 | 100–120 |
| Celery | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jul 17 – Sep 11 | 80–120 |
| Celtuce | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 26 – Aug 7 | 60–90 |
| Chard | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 19 – Aug 7 | 50–60 |
| Chickpeas | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jul 17 – Aug 28 | 80–110 |
| Chicory | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 26 – Aug 7 | 60–85 |
| Chinese Cabbage | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 19 – Jul 17 | 50–70 |
| Christmas Lima Beans | Feb 27 | May 1 | May 8 | — | Jul 31 – Sep 4 | 80–100 |
| Collard Greens | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 19 – Aug 21 | 55–75 |
| Corn | — | May 1 | — | — | Jul 3 – Aug 28 | 60–100 |
| Cowpeas | — | May 1 | — | — | Jul 3 – Aug 14 | 60–90 |
| Cress | Mar 20 | Apr 10 | Apr 24 | Aug 2 | May 8 – May 29 | 14–21 |
| Crookneck Squash | Mar 20 | May 1 | May 8 | — | Jun 26 – Jul 24 | 45–60 |
| Crosne | — | Apr 10 | — | Aug 2 | Sep 11 – Sep 25 | 150–200 |
| Cucumber | Mar 20 | May 1 | May 8 | — | Jul 3 – Aug 28 | 50–70 |
| Daikon | — | Apr 10 | — | Aug 2 | Jun 5 – Jul 3 | 50–70 |
| Delicata Squash | Mar 20 | May 1 | May 8 | — | Jul 31 – Sep 4 | 80–100 |
| Edamame | — | May 1 | — | — | Jul 17 – Aug 28 | 75–100 |
| Eggplant | Feb 13 | May 1 | May 8 | — | Jul 17 – Sep 18 | 65–85 |
| Endive | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 12 – Jul 17 | 45–65 |
| Escarole | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 19 – Jul 17 | 50–70 |
| Fava Beans | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jul 10 – Aug 21 | 75–100 |
| Fennel | Feb 27 | May 1 | May 8 | — | Jul 10 – Aug 21 | 60–90 |
| Garlic | — | — | — | Aug 30 | Nov 29 – Feb 14 | 90–240 |
| Green Beans | — | May 1 | — | — | Jun 26 – Aug 21 | 50–65 |
| Horseradish | — | — | May 8 | — | Sep 11 – Oct 23 | 120–180 |
| Hot Peppers | Feb 13 | May 1 | May 8 | — | Jul 17 – Oct 23 | 70–120 |
| Hubbard Squash | Mar 20 | May 1 | May 8 | — | Aug 21 – Sep 25 | 100–120 |
| Kabocha | Mar 20 | May 1 | May 8 | — | Aug 7 – Sep 4 | 85–100 |
| Kai Lan | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 12 – Jul 10 | 45–60 |
| Kale | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 19 – Aug 14 | 50–70 |
| Kidney Beans | — | May 1 | — | — | Jul 31 – Sep 4 | 85–110 |
| Kohlrabi | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 12 – Jul 17 | 45–65 |
| Komatsuna | Mar 20 | Apr 10 | Apr 24 | Aug 2 | May 29 – Jul 3 | 35–50 |
| Leeks | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jul 24 – Oct 9 | 90–150 |
| Lentils | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jul 17 – Aug 28 | 80–110 |
| Lettuce | Mar 20 | Apr 10 | Apr 24 | Aug 2 | May 29 – Aug 7 | 30–60 |
| Lima Beans | — | May 1 | — | — | Jul 3 – Aug 14 | 60–90 |
| Mache | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 5 – Jul 10 | 40–60 |
| Melon | Mar 20 | May 1 | May 8 | — | Jul 17 – Sep 4 | 70–100 |
| Microgreens | Mar 20 | Apr 10 | Apr 24 | Aug 2 | May 1 – May 29 | 7–21 |
| Mitsuba | Mar 20 | Apr 10 | Apr 17 | Aug 2 | Jun 12 – Aug 7 | 50–70 |
| Mizuna | Mar 20 | Apr 10 | Apr 24 | Aug 2 | May 29 – Jun 26 | 30–45 |
| Mustard Greens | Mar 20 | Apr 10 | Apr 24 | Aug 2 | May 29 – Jul 31 | 30–50 |
| Napa Cabbage | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 19 – Jul 24 | 55–75 |
| New Zealand Spinach | Feb 27 | May 1 | May 8 | — | Jul 3 – Jul 31 | 55–70 |
| Okra | Feb 27 | May 1 | May 8 | — | Jul 3 – Aug 28 | 50–65 |
| Onion | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jul 24 – Sep 11 | 90–120 |
| Pac Choi | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 5 – Jul 3 | 40–55 |
| Parsnip | — | Apr 10 | — | Aug 2 | Jul 24 – Sep 4 | 100–130 |
| Patty Pan Squash | Mar 20 | May 1 | May 8 | — | Jun 26 – Jul 24 | 45–60 |
| Peas | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 19 – Aug 14 | 55–70 |
| Peppers | Feb 13 | May 1 | May 8 | — | Jul 10 – Sep 18 | 60–90 |
| Pole Beans | Feb 27 | May 1 | May 8 | — | Jul 3 – Aug 28 | 55–70 |
| Potatoes | Feb 27 | May 1 | May 8 | — | Jul 17 – Sep 25 | 70–120 |
| Pumpkin | Mar 20 | May 1 | May 8 | — | Aug 7 – Sep 25 | 85–120 |
| Purslane | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 5 – Jul 10 | 40–60 |
| Radicchio | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 26 – Jul 31 | 60–80 |
| Radish | — | Apr 10 | — | Aug 2 | May 8 – May 29 | 22–35 |
| Rhubarb | — | — | May 15 | — | — | 365–730 |
| Romanesco | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jul 10 – Aug 21 | 75–100 |
| Rutabaga | — | Apr 10 | — | Aug 2 | Jul 3 – Aug 7 | 80–100 |
| Salsify | — | Apr 10 | — | Aug 2 | Jul 24 – Sep 4 | 100–130 |
| Savoy Cabbage | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jul 3 – Aug 28 | 70–110 |
| Scallions | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 19 – Jul 17 | 50–70 |
| Scarlet Runner Beans | Feb 27 | May 1 | May 8 | — | Jul 10 – Aug 14 | 60–80 |
| Shallot | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jul 24 – Sep 11 | 90–120 |
| Shiso | Mar 6 | May 1 | May 8 | — | Jul 3 – Aug 28 | 50–70 |
| Snap Peas | Feb 27 | May 1 | May 8 | — | Jul 3 – Aug 28 | 55–70 |
| Snow Peas | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 19 – Aug 14 | 50–65 |
| Soybeans | — | May 1 | — | — | Jul 24 – Sep 18 | 80–120 |
| Spaghetti Squash | Mar 20 | May 1 | May 8 | — | Aug 7 – Sep 4 | 85–100 |
| Spinach | Mar 20 | Apr 10 | Apr 24 | Aug 2 | May 29 – Jul 31 | 35–50 |
| Squash (Summer) | Mar 20 | May 1 | May 8 | — | Jun 26 – Aug 28 | 45–65 |
| Squash (Winter) | Mar 20 | May 1 | May 8 | — | Jul 31 – Sep 25 | 80–120 |
| Sunchoke | — | — | May 8 | — | Aug 28 – Oct 23 | 110–150 |
| Sweet Corn | — | May 1 | — | — | Jul 3 – Aug 14 | 60–90 |
| Sweet Potatoes | Feb 27 | May 1 | May 8 | — | Aug 7 – Sep 25 | 90–120 |
| Tatsoi | Mar 20 | Apr 10 | Apr 24 | Aug 2 | May 29 – Jul 3 | 35–50 |
| Tomatillo | Feb 27 | May 1 | May 8 | — | Jul 10 – Sep 18 | 60–85 |
| Tomatoes | Feb 27 | May 1 | May 8 | — | Jul 10 – Sep 18 | 60–85 |
| Turnip | — | Apr 10 | — | Aug 2 | May 22 – Jun 26 | 40–60 |
| Watercress | Mar 20 | Apr 10 | Apr 24 | Aug 2 | Jun 5 – Jul 10 | 40–60 |
| Watermelon | Mar 20 | May 1 | May 8 | — | Jul 17 – Sep 4 | 70–100 |
| Wax Beans | — | May 1 | — | — | Jun 26 – Aug 21 | 50–65 |
| Winter Melon | Feb 27 | May 1 | May 8 | — | Aug 7 – Sep 25 | 90–120 |
| Yard Long Beans | Feb 27 | May 1 | May 8 | — | Jul 3 – Aug 14 | 55–80 |
| Zucchini | Mar 20 | May 1 | May 8 | — | Jun 26 – Aug 21 | 45–60 |
🍓 Fruits to Grow in Adams County
27 fruits that grow well in Zone 5b with planting dates for Adams County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | May 15 | — | Aug 14 – Oct 30 | 90–180 |
| Aronia | — | — | May 15 | — | — | 730–1095 |
| Blackberries | — | — | May 15 | — | — | 365–730 |
| Blueberries | — | — | May 15 | — | — | 730–1095 |
| Boysenberries | — | — | May 15 | — | — | 365–730 |
| Cantaloupe | — | — | May 15 | — | Jul 24 – Aug 28 | 70–90 |
| Che Fruit | — | — | May 15 | — | — | 1095–1825 |
| Cranberries | — | — | May 15 | — | — | 730–1095 |
| Currants | — | — | May 15 | — | — | 730–1095 |
| Elderberries | — | — | May 15 | — | — | 730–1095 |
| Goji Berries | — | — | May 15 | — | — | 730–1095 |
| Gooseberries | — | — | May 15 | — | — | 730–1095 |
| Grapes | — | — | May 15 | — | — | 730–1095 |
| Ground Cherry | — | — | May 15 | — | Jul 24 – Sep 18 | 65–80 |
| Hardy Kiwi | — | — | May 15 | — | — | 1095–1825 |
| Haskaps | — | — | May 15 | — | — | 730–1095 |
| Honeydew | — | — | May 15 | — | Aug 7 – Sep 18 | 80–110 |
| Jostaberry | — | — | May 15 | — | — | 730–1095 |
| Lingonberries | — | — | May 15 | — | — | 730–1095 |
| Medlar | — | — | May 15 | — | — | 1095–1825 |
| Mulberries | — | — | May 15 | — | — | 730–1825 |
| Pawpaw | — | — | May 15 | — | — | 1095–2555 |
| Persimmon | — | — | May 15 | — | — | 1095–2555 |
| Quince | — | — | May 15 | — | — | 1095–1825 |
| Raspberries | — | — | May 15 | — | — | 365–730 |
| Serviceberries | — | — | May 15 | — | — | 730–1095 |
| Strawberries | — | — | May 15 | — | Aug 14 – Oct 30 | 90–365 |
🌿 Herbs to Grow in Adams County
34 herbs that grow well in Zone 5b with planting dates for Adams County.
Show all 34 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Mar 20 | Apr 10 | Apr 17 | Aug 2 | — | 365–730 |
| Anise | Mar 20 | Apr 10 | Apr 17 | Aug 2 | Jul 17 – Oct 2 | 90–120 |
| Basil | Mar 6 | May 1 | May 8 | — | Jul 3 – Sep 4 | 50–75 |
| Bee Balm | — | — | May 1 | — | Jul 31 – Oct 16 | 90–120 |
| Borage | Mar 20 | Apr 10 | Apr 17 | Aug 2 | Jun 12 – Jul 31 | 50–60 |
| Caraway | Mar 20 | Apr 10 | Apr 17 | Aug 2 | — | 365–450 |
| Catnip | — | — | May 1 | — | Jul 3 – Sep 4 | 60–80 |
| Chamomile | Mar 20 | Apr 10 | Apr 17 | Aug 2 | Jun 19 – Aug 28 | 60–90 |
| Chervil | Mar 20 | Apr 10 | Apr 17 | Aug 2 | May 29 – Jul 31 | 40–60 |
| Chives | — | — | May 1 | — | Jul 3 – Sep 11 | 60–90 |
| Cilantro | Mar 20 | Apr 10 | Apr 17 | Aug 2 | May 29 – Jul 31 | 40–60 |
| Comfrey | — | — | May 1 | — | Jul 3 – Sep 11 | 60–90 |
| Cumin | Mar 20 | Apr 10 | Apr 17 | Aug 2 | Jul 31 – Oct 2 | 100–120 |
| Dill | Mar 20 | Apr 10 | Apr 17 | Aug 2 | May 29 – Jul 31 | 40–60 |
| Epazote | Mar 6 | May 1 | May 8 | — | Jun 26 – Aug 21 | 45–60 |
| Fennel (herb) | Mar 20 | Apr 10 | Apr 17 | Aug 2 | Jun 19 – Aug 28 | 60–90 |
| Feverfew | — | — | May 1 | — | Jul 31 – Oct 16 | 90–120 |
| Garlic Chives | — | — | May 1 | — | Jul 3 – Sep 11 | 60–90 |
| Horehound | — | — | May 1 | — | Jul 17 – Sep 11 | 75–90 |
| Hyssop | — | — | May 1 | — | Jul 10 – Sep 11 | 70–90 |
| Lemon Balm | — | — | May 1 | — | Jul 3 – Aug 21 | 60–70 |
| Lemon Thyme | — | — | May 1 | — | Jul 10 – Sep 11 | 70–90 |
| Lovage | — | — | May 1 | — | Jul 10 – Sep 11 | 70–90 |
| Mint | — | — | May 1 | — | Jul 3 – Sep 11 | 60–90 |
| Oregano | — | — | May 1 | — | Jul 3 – Sep 11 | 60–90 |
| Parsley | Mar 20 | Apr 10 | Apr 17 | Aug 2 | Jun 19 – Aug 21 | 60–80 |
| Rue | — | — | May 1 | — | Jul 10 – Sep 11 | 70–90 |
| Sage | — | — | May 1 | — | Jul 17 – Sep 11 | 75–90 |
| Savory | — | — | May 1 | — | Jun 26 – Aug 21 | 50–70 |
| Sorrel | Mar 20 | Apr 10 | Apr 17 | Aug 2 | May 29 – Jul 31 | 40–60 |
| Tarragon | — | — | May 1 | — | Jul 3 – Sep 11 | 60–90 |
| Thai Basil | Mar 6 | May 1 | May 8 | — | Jul 3 – Sep 4 | 50–75 |
| Thyme | — | — | May 1 | — | Jul 10 – Sep 11 | 70–90 |
| Valerian | — | — | May 1 | — | Sep 4 – Oct 16 | 120–180 |
🌸 Flowers to Grow in Adams County
51 flowers that grow well in Zone 5b with planting dates for Adams County.
Show all 51 flowers with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Mar 6 | May 1 | May 1 | — | Jun 26 – Sep 25 | 60–75 |
| Alliums | — | — | — | Aug 30 | Oct 4 – Oct 25 | 28–42 |
| Anemones | Mar 27 | — | Apr 24 | — | May 29 – Jun 26 | 90–120 |
| Astilbe | Feb 20 | — | May 8 | — | Jul 24 – Oct 2 | 70–100 |
| Bachelor's Button | Mar 13 | Apr 3 | Apr 24 | — | Jun 26 – Sep 11 | 60–90 |
| Begonias | Feb 13 | — | May 1 | — | Jul 10 – Oct 2 | 70–90 |
| Black-eyed Susan | Feb 20 | Apr 24 | May 8 | — | Jul 24 – Oct 30 | 60–80 |
| Bleeding Hearts | Feb 20 | — | May 8 | — | Jul 3 – Aug 14 | 60–90 |
| Calendula | Mar 13 | Apr 3 | Apr 24 | — | Jun 12 – Sep 11 | 50–70 |
| Celosia | Mar 20 | May 1 | May 1 | — | Jul 3 – Oct 9 | 60–90 |
| Columbine | Feb 20 | May 8 | May 8 | — | Jul 3 – Aug 14 | 70–100 |
| Coreopsis | Feb 20 | May 1 | May 8 | — | Jul 17 – Oct 30 | 60–80 |
| Cosmos | Mar 27 | Apr 24 | Apr 24 | — | Jul 3 – Oct 2 | 60–90 |
| Crocus | — | — | — | Aug 30 | Jul 12 – Aug 2 | 10–20 |
| Daffodils | — | — | — | Aug 30 | Jul 19 – Aug 9 | 20–40 |
| Dahlias | Mar 27 | May 1 | May 1 | — | Jul 24 – Oct 23 | 70–120 |
| Daylily | Feb 20 | — | May 8 | — | Jul 31 – Oct 30 | 60–90 |
| Dianthus | Feb 20 | Mar 27 | Apr 10 | — | May 29 – Aug 21 | 60–80 |
| Echinacea (Purple Coneflower) | Feb 20 | May 8 | May 8 | — | Jul 31 – Oct 30 | 70–90 |
| Foxglove | Feb 20 | May 8 | May 8 | — | Jul 3 – Aug 14 | 80–120 |
| Gaillardia (Blanket Flower) | Feb 27 | May 1 | May 1 | — | Jul 10 – Oct 30 | 70–100 |
| Geraniums | Feb 13 | — | May 1 | — | Jul 10 – Oct 2 | 70–100 |
| Gladiolus | — | May 1 | May 1 | — | Jul 24 – Oct 23 | 70–100 |
| Hostas | Feb 13 | — | May 8 | — | Jul 31 – Oct 30 | 60–90 |
| Hyacinths | — | — | — | Aug 30 | Aug 9 – Sep 6 | 14–28 |
| Hydrangeas | Feb 13 | — | May 8 | — | Jul 24 – Oct 16 | 90–150 |
| Impatiens | Feb 27 | — | May 1 | — | Jul 10 – Oct 9 | 60–75 |
| Irises | — | Division | May 8 | — | Jul 3 – Aug 7 | 60–100 |
| Larkspur | — | Mar 27 | — | — | Jun 5 – Jul 31 | 60–90 |
| Lavender | Feb 13 | — | May 15 | — | Jul 24 – Sep 11 | 90–120 |
| Lilies | — | Division | May 8 | — | Jul 17 – Oct 16 | 70–120 |
| Lobelia | Feb 13 | — | Apr 17 | — | Jun 12 – Aug 28 | 70–80 |
| Lupine | Feb 20 | May 8 | May 8 | — | Jul 3 – Aug 14 | 75–100 |
| Marigolds | Mar 13 | May 1 | May 1 | — | Jun 26 – Sep 25 | 50–70 |
| Nasturtium | Mar 27 | May 1 | May 1 | — | Jun 26 – Oct 9 | 55–65 |
| Pansy | Feb 13 | — | Apr 24 | — | Jun 19 – Aug 21 | 70–90 |
| Peonies | — | Division | May 8 | — | Jul 17 – Aug 28 | 90–120 |
| Petunia | Feb 27 | — | May 1 | — | Jul 10 – Oct 9 | 70–90 |
| Phlox | Feb 20 | May 8 | May 8 | — | Jul 24 – Oct 16 | 80–110 |
| Portulaca | Mar 20 | May 1 | May 1 | — | Jun 19 – Sep 25 | 50–70 |
| Roses | Feb 13 | — | May 8 | — | Jul 24 – Oct 30 | 90–180 |
| Salvia | Feb 20 | — | May 1 | — | Jul 10 – Oct 9 | 70–90 |
| Sedum (Stonecrop) | Feb 20 | — | May 8 | — | Sep 4 – Nov 13 | 60–90 |
| Snapdragon | Feb 13 | Apr 10 | Apr 24 | — | Jul 3 – Sep 11 | 70–100 |
| Sunflower | Apr 3 | May 1 | May 1 | — | Jul 24 – Oct 9 | 70–100 |
| Sweet Alyssum | Mar 6 | Apr 10 | Apr 24 | — | Jun 5 – Aug 14 | 45–60 |
| Sweet Pea | Mar 13 | Mar 20 | Apr 24 | — | Jul 10 – Sep 11 | 65–85 |
| Tulips | — | — | — | Aug 30 | Aug 2 – Aug 23 | 15–30 |
| Vinca (Annual) | Feb 6 | — | May 1 | — | Jul 10 – Oct 2 | 70–90 |
| Yarrow | Feb 20 | Apr 24 | May 8 | — | Jul 17 – Oct 30 | 60–90 |
| Zinnia | Mar 27 | May 1 | May 1 | — | Jul 10 – Oct 9 | 60–70 |
Monthly Planting Guide for Adams County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Adams County.
Frequently Asked Questions
What planting zone is Adams County, IA?
Adams County is in USDA Hardiness Zone 5b. 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 Adams County, IA?
Based on 30 years of NOAA weather station data, the median last spring frost in Adams County falls around April 24. Plan transplants and direct-sow dates relative to this date.
When is the first fall frost in Adams County, IA?
The median first fall frost in Adams County arrives around October 11. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
Your Adams County Garden Planner — Free
A 22-page printable planner built for Adams County (Zone 5b). 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
$27
$293 value
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
$27
$157 value
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
$27
$210 value
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