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Andover, IL — Planting Guide for June

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Henry County, Illinois Zone 5b June

June in the garden — Henry County, Illinois

Your garden in Henry County, Illinois is working on a schedule, even when you're not. Here's where you should be this June.

Avg. last frost April 16
Avg. first frost October 16
Soil temp (4") 71°F
Watering Low
Pest pressure High
Daylight 15 hrs
  1. Get basil, peppers, and pole beans seeds going inside

    You're about 15 weeks out from your last frost — the perfect window to get these germinating indoors.

  2. Collect basil, carrots, and cucumber at their peak

    The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.

A few tasks this June that'll pay off in July
  • Starting indoors: vinca (annual)
  • First harvests: basil, carrots, and cucumber

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Andover has a classic four-season growing climate (Zone 5b). The last spring frost typically lands around April 16 and the first fall frost arrives around October 16 — a 183-day frost-free season that's long enough for tomatoes, peppers, melons, and a full succession of cool-weather crops on either side. The trick is timing: start warm-season seedlings indoors 6–8 weeks before last frost, harden them off, and plant out the week after your local frost date is statistically safe.

Soils trend Silt Loam — the gold standard for vegetables. Add 2–3" of compost annually to maintain it and you'll outgrow most of your neighbors.

Drought pressure is moderate (15.1 weeks/year on average). Mulching and drip irrigation pay for themselves quickly.

🌡️ USDA Zone

5b (-15°F to -10°F min)

❄️ Avg. Last Frost

April 16

🍂 Avg. First Frost

October 16

📅 Growing Season

183 days

🌧️ Climate

Unknown 0.0" annual

💨 Wind

Moderate 9.1 mph avg

🥶 Frost Tier

Regular 0% frost-free years

🏜️ Drought

15.1 wk/yr trend stable

📍 ZIP Codes

1 ZIP

Andover, IL Moderate season
183 days
Last Spring Frost April 16
183 growing days
First Fall Frost October 16

Monthly Watering Calendar for Andover

When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.

What this means for you: Most vegetables want about 1 inch of water per week. Andover gets 0" a year — months that hit that 1"/week need zero supplemental watering; months that fall short, the table tells you how much to add. Saves you from drowning roots and from drought-stressing plants into bolting.

1"/wk 0" 1.3" 2.5" 3.8" 5" Jan 1.5" Feb 1.3" Mar 2" +1.3" Apr 3" +0.8" May 3.5" Jun 4.6" +1" Jul 3.3" +0.9" Aug 3.4" +1.3" Sep 3" +1.9" Oct 2.4" Nov 1.9" Dec 1.9"
Rainfall sufficient Supplemental water needed Heavy watering required - - - 1"/week garden need
View detailed monthly data
MonthAvg RainfallRainy DaysExtra Water NeededWatering Effort
Jan 1.5 in 8 days None
Feb 1.3 in 6 days None
Mar 2 in 8 days None
Apr 3 in 9 days 1.3 in Moderate
May 3.5 in 10 days 0.8 in Moderate
Jun 4.6 in 11 days Low
Jul 3.3 in 10 days 1 in Moderate
Aug 3.4 in 9 days 0.9 in Moderate
Sep 3 in 8 days 1.3 in Moderate
Oct 2.4 in 7 days 1.9 in High
Nov 1.9 in 8 days None
Dec 1.9 in 7 days None

Annual total: 31.8 in. Water needs vary by crop — tomatoes need ~1.2"/week while herbs like rosemary need only 0.3"/week. Check individual plant pages for crop-specific water budgets that factor in your county's rainfall and soil drainage.

Andover Soil Profile

Soil Type

Silt Loam

Soil pH

6.3-7.2

Drainage

Well Drained

Frost Risk Probability

Based on 31 years of NOAA weather station data from 3 stations

Too early frost risk Safe to Plant Apr 16 → Oct 16 183 frost-free days Protect crops frost returns Apr May Jun Jul Aug Sep Oct Nov Dec Safe: May 2 Protect by: Nov 3

Beginners: Plant frost-sensitive crops (tomatoes, peppers, squash) after the "Safe" date on the left. Harvest or cover them before the "Protect by" date on the right. Hardy crops (lettuce, peas, kale) can go in the yellow transition zones.

How to read this table: "Conservative" means you're safe from frost 9 out of 10 years — best for beginners and frost-sensitive crops. "Average year" is the typical date. "Aggressive" means only 1 in 10 years is that warm — experienced gardeners with frost protection can try these dates.

Planting Strategy Last Spring Frost First Fall Frost Frost-Free Days
Conservative (safest) May 2 Nov 3 185 days
Cautious Apr 24 Oct 24 183 days
Average year Apr 16 Oct 16 183 days
Optimistic Apr 10 Oct 11 184 days
Aggressive (risky) Apr 3 Oct 4 184 days
📊
How predictable are frost dates here?

Not very — frost dates can vary by ±29 days year-to-year. Use the "Conservative" row in the table below, and keep row covers handy for surprise late frosts.

⚠️
Is the growing season changing?

Yes — growing seasons are getting shorter here (about 2.5 days per decade). Use the "Conservative" dates and choose fast-maturing varieties.

Gardening Difficulty Score

61 Good
Frost Timing Risk
10.0/10
Drought Risk
3.5/10
Soil Difficulty
0.0/10
Altitude Challenge
0.0/10
Climate Shift
10.0/10
Rainfall Challenge
0.0/10

Henry County offers good growing conditions. A little planning around frost dates goes a long way.

Zone 5b Frost Countdown
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Loading...
Last Frost: Apr 16 First Frost: Oct 16

Local Gardening Help in Henry County

Free expert help is closer than you think. Your county's cooperative extension office connects you with trained gardeners, soil testing labs, and local programs — all specific to Henry County's climate and soil.

County Extension Office

Henry County University of Illinois Extension Extension Office

Phone: 217-333-7672

Visit Extension Office Website →

Extension offices are run by land-grant universities and funded by the USDA. Their advice is free, research-based, and tailored to your county's specific conditions.

Master Gardener Program

Free gardening help from trained volunteers

Master Gardeners are community volunteers who complete 40–60 hours of university horticultural training. They answer gardening questions, diagnose plant problems, and offer workshops — all free.

Find Master Gardeners in IL →

Many extension offices run a Master Gardener hotline where you can call or email with photos of plant problems for free diagnosis.

Soil Testing

Available through your extension office

Before amending your soil, get it tested. Your extension office offers soil testing (typically $10–$25) that tells you exact pH, nutrient levels, and amendment recommendations specific to what you want to grow.

Request a Soil Test →

Services Available in Henry County

Soil testing Pest identification Master Gardener hotline Workshops
Finding local nurseries & garden centers in Henry County

Why Buy Local

Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Henry County's soil and climate that big-box stores can't. Plants from local growers are typically hardier because they're already acclimated to your zone.

How to Find Them

Search for "nurseries near Henry County IL" or "garden center Henry County" on Google Maps. Also check with your extension office — they often maintain lists of reputable local nurseries and plant sales.

Community gardens & gardening groups

Community gardens are a great way to learn from experienced gardeners in your area, especially if you're limited on space. Search "community garden Henry County IL" or check your extension office and local parks department. Facebook groups like "Henry County Gardeners" or "Illinois Gardening" are also excellent for local advice and plant swaps.

What to Plant After Your Harvest

After your first crops finish, use the remaining frost-free days to grow a second round.

Show 6 more succession options
After Green Beans (harvest ends Aug 6) 71 days until frost
After Onion (harvest ends Sep 3) 43 days until frost
After Cantaloupe (harvest ends Aug 20) 57 days until frost
After Sweet Corn (harvest ends Jul 30) 78 days until frost
After Corn (harvest ends Aug 13) 64 days until frost
After Beets (harvest ends Jul 9) 99 days until frost

Sunlight & Day Length in Andover

Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.

Quick context: Onion varieties are sold by "short-day," "intermediate-day," and "long-day." Andover's latitude determines which to buy — and getting it wrong is the difference between baseball-sized bulbs and marbles.

Longest Day

15 hours

Summer solstice daylight

Shortest Day

9 hours

Winter solstice daylight

Peak Sun Hours

9.4 hr/day peak (summer)

Peak sun hours (green dashed line below) account for cloud cover — this is the usable direct sunlight your garden actually receives. Most vegetables need 6+ peak sun hours.

14hr 12hr 2h 6h 9h 13h 16h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daylight hours (sunrise to sunset) Peak sun hours (direct sunlight after cloud cover) ▪ Gold zone = long day (14+ hr) ▪ Blue zone = short day (<12 hr)

Onion tip: Your long summer days (14+ hours) support long-day onion varieties like Walla Walla, Sweet Spanish, and Ailsa Craig.

View detailed monthly data
MonthDaylight HoursPeak Sun HoursDay Length
January 9.3 hr 3.9 hr Short day
February 10.4 hr 4.7 hr Short day
March 11.7 hr 5.4 hr Short day
April 13.1 hr 6.7 hr Neutral
May 14.3 hr 7.9 hr Long day
June 15 hr 9.1 hr Long day
July 14.7 hr 9.4 hr Long day
August 13.7 hr 8.3 hr Neutral
September 12.3 hr 6.9 hr Neutral
October 10.9 hr 5.6 hr Short day
November 9.6 hr 4 hr Short day
December 9 hr 3.6 hr Short day

Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.

Soil Temperature & Composting in Andover

Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.

The practical takeaway: Compost piles need 130-160°F internal temp to actively break down. Below 50°F ambient, microbial activity slows dramatically. Andover's soil temperature curve also tells you when your compost is working and when it's napping.

Plant Warm Crops When

Soil reaches 60°F+

Soil warm enough from Jun through Sep.

Best Month to Compost

Jun

Microbial activity peaks when soil is warm.

Active Composting

6 months

Solid season. Piles go dormant in winter.

60°F 70°F 10° 30° 50° 70° 90° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
4" depth 8" depth - - - 60°F (corn, beans) - - - 70°F (tomatoes, peppers)
View detailed monthly data
MonthSoil 4" DeepSoil 8" DeepCompost ActivityTime to Finish
Jan 25°F 32°F ❄️ Dormant ~36 weeks
Feb 22°F 30°F ❄️ Dormant ~36 weeks
Mar 30°F 34°F ❄️ Dormant ~36 weeks
Apr 45°F 44°F 🐢 Slow ~24 weeks
May 58°F 54°F ♻️ Active ~14 weeks
Jun 71°F 66°F 🔥 Peak ~8 weeks
Jul 76°F 72°F 🔥 Peak ~8 weeks
Aug 78°F 74°F 🔥 Peak ~8 weeks
Sep 71°F 70°F 🔥 Peak ~8 weeks
Oct 57°F 60°F ♻️ Active ~14 weeks
Nov 41°F 49°F 🐢 Slow ~24 weeks
Dec 31°F 38°F ❄️ Dormant ~36 weeks

Highlighted rows = soil 60°F+ (safe for warm-season transplants). Compost finishes fastest during peak activity months.

Pest & Disease Pressure in Andover

Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.

For new gardeners: Two gardeners can grow identical seeds and get wildly different results based on pest pressure alone. Andover's climate sets a floor on what's possible without intervention.

Insect Pest Pressure

6 / 10

Moderate — common pests appear but manageable with monitoring.

Disease Risk

2.2 / 10

Low disease risk — dry conditions reduce fungal problems.

Seasonal Risk

Spring Low
Summer High
Fall Low
Winter Low
View 5 common pests in your area
PestRisk LevelPeak Months
Aphids Moderate May, Jun, Jul, Aug
Japanese beetles Moderate Jun, Jul, Aug
Squash bugs Low Jun, Jul, Aug
Tomato hornworms Low Jul, Aug
Cabbage loopers Low May, Jun, Jul, Aug
Organic pest management tips
  • Use row covers on susceptible crops during peak pest months
  • Apply neem oil preventatively every 7-14 days during active pest season
  • Interplant with strong-scented herbs (basil, marigold) to confuse pests
  • Hand-pick larger pests (beetles, caterpillars) in early morning when they're sluggish
  • Practice crop rotation — never plant the same family in the same spot within 3 years

Cover Crops for Andover

Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.

What this means for you: The "chop and drop" approach to cover crops: cut them down right before flowering, let them lay on the surface as mulch, plant your vegetables through the mulch. Less work, healthier soil.

Spring Cover Crops (3 options) — Build soil before the main growing season
Crop Plant By Terminate N-Fixing Soil Benefit
Buckwheat Apr 16 Aug 14 Rapid growth, attracts pollinators, suppresses weeds
Sorghum-sudan grass Apr 24 Aug 14 Massive biomass, breaks compaction, suppresses nematodes
White clover Mar 22 Aug 7 ✓ Yes Living mulch, fixes nitrogen, permanent ground cover
Summer Cover Crops (1 options) — Fill gaps and suppress weeds between plantings
Crop Plant By Terminate N-Fixing Soil Benefit
Sunflowers May 5 Sep 18 Deep roots break compaction, attract pollinators and beneficial insects
Fall Cover Crops (6 options) — Plant after harvest to protect soil over winter
Crop Plant By Terminate N-Fixing Soil Benefit
Austrian winter peas Aug 13 Mar 26 ✓ Yes Fixes nitrogen, good for heavy clay soils
Daikon radish Aug 19 Mar 26 Deep taproot breaks compaction, excellent for clay soils
Hairy vetch Jul 31 Apr 2 ✓ Yes Excellent nitrogen fixer, good for depleted soils
Oats Sep 16 Apr 2 Quick biomass, winterkills in cold zones — no spring tillage needed
Winter rye Jul 12 Apr 2 Suppresses weeds, prevents erosion, breaks up compacted soil
Winter wheat Jul 23 Apr 2 Erosion control, weed suppression, good biomass

Wind & Microclimate in Andover

Why this matters: Why care about wind? Above about 10 mph, evaporation jumps and pollinators struggle to land on flowers. Andover's 9.1 mph average means you can plant tall crops without much support, but it doesn't mean ignore wind — a 20+ mph storm still snaps unstaked tomatoes.

Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.

Seasonal Wind Speed

Spring: 13 mph   Summer: 10 mph

Fall: 9 mph   Winter: 12 mph

Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.

Windbreak Benefit

4.6/10

Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.

Frost Pocket Risk

Low

Relatively flat terrain (128 ft range). Frost pocket risk is minimal — garden placement is flexible.

Rainwater Harvesting in Andover

How much water you can collect, when to collect it, and what size system you need for your garden.

Why this matters: Even in arid regions, rainwater harvesting works — you just need bigger storage and patience. In wet regions like Andover (0" annually), you're mostly limited by how much water you can store between storms.

Annual Collection

15,849 gal

Per 1,000 sq ft of roof area (at 80% collection efficiency)

Recommended Setup

6 rain barrels (55 gal each)

For a typical 500 sq ft garden. Serious collectors: consider a 1,750 gal tank.

Legal Status

Unrestricted

Rainwater harvesting is fully legal in your state with no restrictions.

Best Collection Months

May, Jun, Jul, Aug

Highest rainfall months — your barrels will fill up quickly during these months.

Months to Draw From Storage

Jan, Feb, Dec

Dry months when you'll rely on stored water — size your storage for this gap.

Rainwater collection tips for your area
  • Your county receives approximately 31.8 inches of rain per year
  • A 1,000 sq ft roof can collect roughly 15,849 gallons annually
  • Rainwater harvesting is fully legal in your state
  • Stock up on stored water before your dry season (Jan, Feb, Dec)
  • Use a first-flush diverter to keep roof debris out of your collection

🥬 Vegetables to Grow in Andover

105 vegetables matched to Zone 5b with planting dates calibrated for Andover.

Show all 105 vegetables with dates
Plant Start Indoors Direct Sow Transplant Fall Plant Harvest Days to Maturity
Acorn Squash Mar 12 Apr 23 Apr 30 Jul 23 – Aug 27 80–100
Amaranth Feb 19 Apr 23 Apr 30 Jul 30 – Sep 17 90–120
Arugula Mar 12 Apr 2 Apr 16 Aug 7 May 21 – Jul 23 30–50
Asparagus Apr 30 730–1095
Beets Apr 2 Aug 7 May 28 – Jun 25 50–70
Belgian Endive Mar 12 Apr 2 Apr 16 Aug 7 Aug 6 – Oct 1 110–150
Bitter Melon Feb 19 Apr 23 Apr 30 Jul 2 – Aug 13 60–90
Black Beans Apr 23 Jul 23 – Sep 10 90–120
Bok Choy Mar 12 Apr 2 Apr 16 Aug 7 May 28 – Jul 2 40–60
Broccoli Mar 12 Apr 2 Apr 16 Aug 7 Jun 18 – Jul 30 60–90
Broccoli Rabe Mar 12 Apr 2 Apr 16 Aug 7 May 28 – Jul 2 40–60
Brussels Sprouts Mar 12 Apr 2 Apr 16 Aug 7 Jul 16 – Sep 10 90–130
Butternut Squash Mar 12 Apr 23 Apr 30 Jul 30 – Sep 3 85–110
Cabbage Mar 12 Apr 2 Apr 16 Aug 7 Jun 18 – Aug 13 60–100
Calabash Feb 19 Apr 23 Apr 30 Jul 23 – Sep 17 80–120
Carrots Apr 2 Aug 7 Jun 4 – Jul 9 60–80
Cauliflower Mar 12 Apr 2 Apr 16 Aug 7 Jun 11 – Aug 13 55–100
Celeriac Mar 12 Apr 2 Apr 16 Aug 7 Jul 30 – Sep 3 100–120
Celery Mar 12 Apr 2 Apr 16 Aug 7 Jul 9 – Sep 3 80–120
Celtuce Mar 12 Apr 2 Apr 16 Aug 7 Jun 18 – Jul 30 60–90
Chard Mar 12 Apr 2 Apr 16 Aug 7 Jun 11 – Jul 30 50–60
Chickpeas Mar 12 Apr 2 Apr 16 Aug 7 Jul 9 – Aug 20 80–110
Chicory Mar 12 Apr 2 Apr 16 Aug 7 Jun 18 – Jul 30 60–85
Chinese Cabbage Mar 12 Apr 2 Apr 16 Aug 7 Jun 11 – Jul 9 50–70
Christmas Lima Beans Feb 19 Apr 23 Apr 30 Jul 23 – Aug 27 80–100
Collard Greens Mar 12 Apr 2 Apr 16 Aug 7 Jun 11 – Aug 13 55–75
Corn Apr 23 Jun 25 – Aug 20 60–100
Cowpeas Apr 23 Jun 25 – Aug 6 60–90
Cress Mar 12 Apr 2 Apr 16 Aug 7 Apr 30 – May 21 14–21
Crookneck Squash Mar 12 Apr 23 Apr 30 Jun 18 – Jul 16 45–60
Crosne Apr 2 Aug 7 Sep 3 – Sep 17 150–200
Cucumber Mar 12 Apr 23 Apr 30 Jun 25 – Aug 20 50–70
Daikon Apr 2 Aug 7 May 28 – Jun 25 50–70
Delicata Squash Mar 12 Apr 23 Apr 30 Jul 23 – Aug 27 80–100
Edamame Apr 23 Jul 9 – Aug 20 75–100
Eggplant Feb 5 Apr 23 Apr 30 Jul 9 – Sep 10 65–85
Endive Mar 12 Apr 2 Apr 16 Aug 7 Jun 4 – Jul 9 45–65
Escarole Mar 12 Apr 2 Apr 16 Aug 7 Jun 11 – Jul 9 50–70
Fava Beans Mar 12 Apr 2 Apr 16 Aug 7 Jul 2 – Aug 13 75–100
Fennel Feb 19 Apr 23 Apr 30 Jul 2 – Aug 13 60–90
Garlic Sep 4 Dec 4 – Feb 19 90–240
Green Beans Apr 23 Jun 18 – Aug 13 50–65
Horseradish Apr 30 Sep 3 – Oct 15 120–180
Hot Peppers Feb 5 Apr 23 Apr 30 Jul 9 – Oct 15 70–120
Hubbard Squash Mar 12 Apr 23 Apr 30 Aug 13 – Sep 17 100–120
Kabocha Mar 12 Apr 23 Apr 30 Jul 30 – Aug 27 85–100
Kai Lan Mar 12 Apr 2 Apr 16 Aug 7 Jun 4 – Jul 2 45–60
Kale Mar 12 Apr 2 Apr 16 Aug 7 Jun 11 – Aug 6 50–70
Kidney Beans Apr 23 Jul 23 – Aug 27 85–110
Kohlrabi Mar 12 Apr 2 Apr 16 Aug 7 Jun 4 – Jul 9 45–65
Komatsuna Mar 12 Apr 2 Apr 16 Aug 7 May 21 – Jun 25 35–50
Leeks Mar 12 Apr 2 Apr 16 Aug 7 Jul 16 – Oct 1 90–150
Lentils Mar 12 Apr 2 Apr 16 Aug 7 Jul 9 – Aug 20 80–110
Lettuce Mar 12 Apr 2 Apr 16 Aug 7 May 21 – Jul 30 30–60
Lima Beans Apr 23 Jun 25 – Aug 6 60–90
Mache Mar 12 Apr 2 Apr 16 Aug 7 May 28 – Jul 2 40–60
Melon Mar 12 Apr 23 Apr 30 Jul 9 – Aug 27 70–100
Microgreens Mar 12 Apr 2 Apr 16 Aug 7 Apr 23 – May 21 7–21
Mitsuba Mar 12 Apr 2 Apr 9 Aug 7 Jun 4 – Jul 30 50–70
Mizuna Mar 12 Apr 2 Apr 16 Aug 7 May 21 – Jun 18 30–45
Mustard Greens Mar 12 Apr 2 Apr 16 Aug 7 May 21 – Jul 23 30–50
Napa Cabbage Mar 12 Apr 2 Apr 16 Aug 7 Jun 11 – Jul 16 55–75
New Zealand Spinach Feb 19 Apr 23 Apr 30 Jun 25 – Jul 23 55–70
Okra Feb 19 Apr 23 Apr 30 Jun 25 – Aug 20 50–65
Onion Mar 12 Apr 2 Apr 16 Aug 7 Jul 16 – Sep 3 90–120
Pac Choi Mar 12 Apr 2 Apr 16 Aug 7 May 28 – Jun 25 40–55
Parsnip Apr 2 Aug 7 Jul 16 – Aug 27 100–130
Patty Pan Squash Mar 12 Apr 23 Apr 30 Jun 18 – Jul 16 45–60
Peas Mar 12 Apr 2 Apr 16 Aug 7 Jun 11 – Aug 6 55–70
Peppers Feb 5 Apr 23 Apr 30 Jul 2 – Sep 10 60–90
Pole Beans Feb 19 Apr 23 Apr 30 Jun 25 – Aug 20 55–70
Potatoes Feb 19 Apr 23 Apr 30 Jul 9 – Sep 17 70–120
Pumpkin Mar 12 Apr 23 Apr 30 Jul 30 – Sep 17 85–120
Purslane Mar 12 Apr 2 Apr 16 Aug 7 May 28 – Jul 2 40–60
Radicchio Mar 12 Apr 2 Apr 16 Aug 7 Jun 18 – Jul 23 60–80
Radish Apr 2 Aug 7 Apr 30 – May 21 22–35
Rhubarb May 7 365–730
Romanesco Mar 12 Apr 2 Apr 16 Aug 7 Jul 2 – Aug 13 75–100
Rutabaga Apr 2 Aug 7 Jun 25 – Jul 30 80–100
Salsify Apr 2 Aug 7 Jul 16 – Aug 27 100–130
Savoy Cabbage Mar 12 Apr 2 Apr 16 Aug 7 Jun 25 – Aug 20 70–110
Scallions Mar 12 Apr 2 Apr 16 Aug 7 Jun 11 – Jul 9 50–70
Scarlet Runner Beans Feb 19 Apr 23 Apr 30 Jul 2 – Aug 6 60–80
Shallot Mar 12 Apr 2 Apr 16 Aug 7 Jul 16 – Sep 3 90–120
Shiso Feb 26 Apr 23 Apr 30 Jun 25 – Aug 20 50–70
Snap Peas Feb 19 Apr 23 Apr 30 Jun 25 – Aug 20 55–70
Snow Peas Mar 12 Apr 2 Apr 16 Aug 7 Jun 11 – Aug 6 50–65
Soybeans Apr 23 Jul 16 – Sep 10 80–120
Spaghetti Squash Mar 12 Apr 23 Apr 30 Jul 30 – Aug 27 85–100
Spinach Mar 12 Apr 2 Apr 16 Aug 7 May 21 – Jul 23 35–50
Squash (Summer) Mar 12 Apr 23 Apr 30 Jun 18 – Aug 20 45–65
Squash (Winter) Mar 12 Apr 23 Apr 30 Jul 23 – Sep 17 80–120
Sunchoke Apr 30 Aug 20 – Oct 15 110–150
Sweet Corn Apr 23 Jun 25 – Aug 6 60–90
Sweet Potatoes Feb 19 Apr 23 Apr 30 Jul 30 – Sep 17 90–120
Tatsoi Mar 12 Apr 2 Apr 16 Aug 7 May 21 – Jun 25 35–50
Tomatillo Feb 19 Apr 23 Apr 30 Jul 2 – Sep 10 60–85
Tomatoes Feb 19 Apr 23 Apr 30 Jul 2 – Sep 10 60–85
Turnip Apr 2 Aug 7 May 14 – Jun 18 40–60
Watercress Mar 12 Apr 2 Apr 16 Aug 7 May 28 – Jul 2 40–60
Watermelon Mar 12 Apr 23 Apr 30 Jul 9 – Aug 27 70–100
Wax Beans Apr 23 Jun 18 – Aug 13 50–65
Winter Melon Feb 19 Apr 23 Apr 30 Jul 30 – Sep 17 90–120
Yard Long Beans Feb 19 Apr 23 Apr 30 Jun 25 – Aug 6 55–80
Zucchini Mar 12 Apr 23 Apr 30 Jun 18 – Aug 13 45–60

🍓 Fruits to Grow in Andover

27 fruits matched to Zone 5b with planting dates calibrated for Andover.

Show all 27 fruits with dates
Plant Start Indoors Direct Sow Transplant Fall Plant Harvest Days to Maturity
Alpine Strawberries May 7 Aug 6 – Oct 22 90–180
Aronia May 7 730–1095
Blackberries May 7 365–730
Blueberries May 7 730–1095
Boysenberries May 7 365–730
Cantaloupe May 7 Jul 16 – Aug 20 70–90
Che Fruit May 7 1095–1825
Cranberries May 7 730–1095
Currants May 7 730–1095
Elderberries May 7 730–1095
Goji Berries May 7 730–1095
Gooseberries May 7 730–1095
Grapes May 7 730–1095
Ground Cherry May 7 Jul 16 – Sep 10 65–80
Hardy Kiwi May 7 1095–1825
Haskaps May 7 730–1095
Honeydew May 7 Jul 30 – Sep 10 80–110
Jostaberry May 7 730–1095
Lingonberries May 7 730–1095
Medlar May 7 1095–1825
Mulberries May 7 730–1825
Pawpaw May 7 1095–2555
Persimmon May 7 1095–2555
Quince May 7 1095–1825
Raspberries May 7 365–730
Serviceberries May 7 730–1095
Strawberries May 7 Aug 6 – Oct 22 90–365

🌿 Herbs to Grow in Andover

34 herbs matched to Zone 5b with planting dates calibrated for Andover.

Show all 34 herbs with dates
Plant Start Indoors Direct Sow Transplant Fall Plant Harvest Days to Maturity
Angelica Mar 12 Apr 2 Apr 9 Aug 7 365–730
Anise Mar 12 Apr 2 Apr 9 Aug 7 Jul 9 – Sep 24 90–120
Basil Feb 26 Apr 23 Apr 30 Jun 25 – Aug 27 50–75
Bee Balm Apr 23 Jul 23 – Oct 8 90–120
Borage Mar 12 Apr 2 Apr 9 Aug 7 Jun 4 – Jul 23 50–60
Caraway Mar 12 Apr 2 Apr 9 Aug 7 365–450
Catnip Apr 23 Jun 25 – Aug 27 60–80
Chamomile Mar 12 Apr 2 Apr 9 Aug 7 Jun 11 – Aug 20 60–90
Chervil Mar 12 Apr 2 Apr 9 Aug 7 May 21 – Jul 23 40–60
Chives Apr 23 Jun 25 – Sep 3 60–90
Cilantro Mar 12 Apr 2 Apr 9 Aug 7 May 21 – Jul 23 40–60
Comfrey Apr 23 Jun 25 – Sep 3 60–90
Cumin Mar 12 Apr 2 Apr 9 Aug 7 Jul 23 – Sep 24 100–120
Dill Mar 12 Apr 2 Apr 9 Aug 7 May 21 – Jul 23 40–60
Epazote Feb 26 Apr 23 Apr 30 Jun 18 – Aug 13 45–60
Fennel (herb) Mar 12 Apr 2 Apr 9 Aug 7 Jun 11 – Aug 20 60–90
Feverfew Apr 23 Jul 23 – Oct 8 90–120
Garlic Chives Apr 23 Jun 25 – Sep 3 60–90
Horehound Apr 23 Jul 9 – Sep 3 75–90
Hyssop Apr 23 Jul 2 – Sep 3 70–90
Lemon Balm Apr 23 Jun 25 – Aug 13 60–70
Lemon Thyme Apr 23 Jul 2 – Sep 3 70–90
Lovage Apr 23 Jul 2 – Sep 3 70–90
Mint Apr 23 Jun 25 – Sep 3 60–90
Oregano Apr 23 Jun 25 – Sep 3 60–90
Parsley Mar 12 Apr 2 Apr 9 Aug 7 Jun 11 – Aug 13 60–80
Rue Apr 23 Jul 2 – Sep 3 70–90
Sage Apr 23 Jul 9 – Sep 3 75–90
Savory Apr 23 Jun 18 – Aug 13 50–70
Sorrel Mar 12 Apr 2 Apr 9 Aug 7 May 21 – Jul 23 40–60
Tarragon Apr 23 Jun 25 – Sep 3 60–90
Thai Basil Feb 26 Apr 23 Apr 30 Jun 25 – Aug 27 50–75
Thyme Apr 23 Jul 2 – Sep 3 70–90
Valerian Apr 23 Aug 27 – Oct 8 120–180

🌸 Flowers to Grow in Andover

51 flowers matched to Zone 5b with planting dates calibrated for Andover.

Show all 51 flowers with dates
Plant Start Indoors Direct Sow Transplant Fall Plant Bloom Days to Maturity
Ageratum Feb 26 Apr 23 Apr 23 Jun 18 – Sep 17 60–75
Alliums Sep 4 Oct 9 – Oct 30 28–42
Anemones Mar 19 Apr 16 May 21 – Jun 18 90–120
Astilbe Feb 12 Apr 30 Jul 16 – Sep 24 70–100
Bachelor's Button Mar 5 Mar 26 Apr 16 Jun 18 – Sep 3 60–90
Begonias Feb 5 Apr 23 Jul 2 – Sep 24 70–90
Black-eyed Susan Feb 12 Apr 16 Apr 30 Jul 16 – Oct 22 60–80
Bleeding Hearts Feb 12 Apr 30 Jun 25 – Aug 6 60–90
Calendula Mar 5 Mar 26 Apr 16 Jun 4 – Sep 3 50–70
Celosia Mar 12 Apr 23 Apr 23 Jun 25 – Oct 1 60–90
Columbine Feb 12 Apr 30 Apr 30 Jun 25 – Aug 6 70–100
Coreopsis Feb 12 Apr 23 Apr 30 Jul 9 – Oct 22 60–80
Cosmos Mar 19 Apr 16 Apr 16 Jun 25 – Sep 24 60–90
Crocus Sep 4 Jul 17 – Aug 7 10–20
Daffodils Sep 4 Jul 24 – Aug 14 20–40
Dahlias Mar 19 Apr 23 Apr 23 Jul 16 – Oct 15 70–120
Daylily Feb 12 Apr 30 Jul 23 – Oct 22 60–90
Dianthus Feb 12 Mar 19 Apr 2 May 21 – Aug 13 60–80
Echinacea (Purple Coneflower) Feb 12 Apr 30 Apr 30 Jul 23 – Oct 22 70–90
Foxglove Feb 12 Apr 30 Apr 30 Jun 25 – Aug 6 80–120
Gaillardia (Blanket Flower) Feb 19 Apr 23 Apr 23 Jul 2 – Oct 22 70–100
Geraniums Feb 5 Apr 23 Jul 2 – Sep 24 70–100
Gladiolus Apr 23 Apr 23 Jul 16 – Oct 15 70–100
Hostas Feb 5 Apr 30 Jul 23 – Oct 22 60–90
Hyacinths Sep 4 Aug 14 – Sep 11 14–28
Hydrangeas Feb 5 Apr 30 Jul 16 – Oct 8 90–150
Impatiens Feb 19 Apr 23 Jul 2 – Oct 1 60–75
Irises Division Apr 30 Jun 25 – Jul 30 60–100
Larkspur Mar 19 May 28 – Jul 23 60–90
Lavender Feb 5 May 7 Jul 16 – Sep 3 90–120
Lilies Division Apr 30 Jul 9 – Oct 8 70–120
Lobelia Feb 5 Apr 9 Jun 4 – Aug 20 70–80
Lupine Feb 12 Apr 30 Apr 30 Jun 25 – Aug 6 75–100
Marigolds Mar 5 Apr 23 Apr 23 Jun 18 – Sep 17 50–70
Nasturtium Mar 19 Apr 23 Apr 23 Jun 18 – Oct 1 55–65
Pansy Feb 5 Apr 16 Jun 11 – Aug 13 70–90
Peonies Division Apr 30 Jul 9 – Aug 20 90–120
Petunia Feb 19 Apr 23 Jul 2 – Oct 1 70–90
Phlox Feb 12 Apr 30 Apr 30 Jul 16 – Oct 8 80–110
Portulaca Mar 12 Apr 23 Apr 23 Jun 11 – Sep 17 50–70
Roses Feb 5 Apr 30 Jul 16 – Oct 22 90–180
Salvia Feb 12 Apr 23 Jul 2 – Oct 1 70–90
Sedum (Stonecrop) Feb 12 Apr 30 Aug 27 – Nov 5 60–90
Snapdragon Feb 5 Apr 2 Apr 16 Jun 25 – Sep 3 70–100
Sunflower Mar 26 Apr 23 Apr 23 Jul 16 – Oct 1 70–100
Sweet Alyssum Feb 26 Apr 2 Apr 16 May 28 – Aug 6 45–60
Sweet Pea Mar 5 Mar 12 Apr 16 Jul 2 – Sep 3 65–85
Tulips Sep 4 Aug 7 – Aug 28 15–30
Vinca (Annual) Jan 29 Apr 23 Jul 2 – Sep 24 70–90
Yarrow Feb 12 Apr 16 Apr 30 Jul 9 – Oct 22 60–90
Zinnia Mar 19 Apr 23 Apr 23 Jul 2 – Oct 1 60–70

Monthly Planting Guide for Andover

ZIP Codes in Andover

Click any ZIP to see its specific frost, soil, and climate measurements (some ZIPs differ noticeably from the town aggregate):

Gardening Guides & Resources

Helpful guides from The Ultimate Homestead to improve your garden in Henry County.

🌱

Your Henry County Garden Planner — Free

A 22-page printable planner built for Henry 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.

Instant PDF download. No spam, unsubscribe any time.

Best Seller
The Gardener's Encyclopedia to Companion Planting

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
See what's inside →
Reader favourite
Seed Saving & Storage Guide

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
Save a lifetime of seed money →
Composting Guide for Homesteaders

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
Start composting today →

Town-level data is aggregated from per-ZIP NOAA GHCN-D measurements (1 ZIP code in Andover), USDA SSURGO soil survey, and the US Drought Monitor weekly archive. Frost dates represent 50% probability averages; local conditions vary by elevation and microclimate. Last updated: June 2026.