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Stormont-Dundas, ON — Planting Guide

Stormont-Dundas is in USDA Zone 6a. The average last spring frost is April 20 and the first fall frost is October 17, giving you a growing season of approximately 180 days.

At an elevation of 196 ft, Stormont-Dundas receives approximately 35.5 in of rainfall annually. Summer highs average 79°F with winter lows around 25°F. The predominant soil type is Clay Loam.

🌡️ Zone

6a (-10°F to -5°F min)

❄️ Last Frost

April 20

🍂 First Frost

October 17

📅 Growing Season

180 days

⛰️ Elevation

196 ft

🌧️ Annual Rainfall

35.5 in

Stormont-Dundas, ON Moderate season
180 days
Last Spring Frost April 20
180 growing days
First Fall Frost October 17

Monthly Watering Calendar

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

1"/wk 0" 1.3" 2.5" 3.8" 5" Jan 1.5" Feb 1.7" +2.2" Mar 2.1" +0.9" Apr 3.4" +0.6" May 3.7" +0.4" Jun 3.9" Jul 4.5" Aug 4.1" +1.4" Sep 2.9" +1.5" Oct 2.8" Nov 2.7" Dec 2.3"
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 7 days None
Feb 1.7 in 7 days None
Mar 2.1 in 8 days 2.2 in High
Apr 3.4 in 9 days 0.9 in Moderate
May 3.7 in 11 days 0.6 in Moderate
Jun 3.9 in 10 days 0.4 in Low
Jul 4.5 in 7 days Low
Aug 4.1 in 8 days 0.2 in Low
Sep 2.9 in 9 days 1.4 in Moderate
Oct 2.8 in 6 days 1.5 in Moderate
Nov 2.7 in 7 days None
Dec 2.3 in 9 days None

Annual total: 35.6 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.

Stormont-Dundas Soil Profile

Soil Type

Clay Loam

Soil pH

6.0-7.0

Drainage

Well Drained

Gardening Difficulty Score

95 Excellent
Frost Timing Risk
0.0/10
Drought Risk
0.0/10
Soil Difficulty
3.0/10
Altitude Challenge
0.0/10
Climate Shift
0.0/10
Rainfall Challenge
0.0/10

Stormont-Dundas is a very forgiving place to garden. Most plants thrive here with minimal effort.

Zone 6a Frost Countdown
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Loading...
Last Frost: Apr 20 First Frost: Oct 17

Local Gardening Help in Stormont-Dundas

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 Stormont-Dundas's climate and soil.

County Extension Office

Stormont-Dundas Extension Office

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.

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.

Services Available in Stormont-Dundas

Soil testing Pest identification
Finding local nurseries & garden centers in Stormont-Dundas

Why Buy Local

Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Stormont-Dundas'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 Stormont-Dundas ON" or "garden center Stormont-Dundas" 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 Stormont-Dundas ON" or check your extension office and local parks department. Facebook groups like "Stormont-Dundas Gardeners" or "Ontario 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 Broccoli (harvest ends Jul 29) 78 days until frost
After Peppers (harvest ends Sep 9) 36 days until frost
After Spinach (harvest ends Jul 22) 85 days until frost
After Lettuce (harvest ends Jul 29) 78 days until frost
After Watermelon (harvest ends Aug 26) 50 days until frost
After Cantaloupe (harvest ends Aug 19) 57 days until frost

Sunlight & Day Length

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

Longest Day

15.4 hours

Summer solstice daylight

Shortest Day

8.6 hours

Winter solstice daylight

Peak Sun Hours

9.8 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 10h 13h 17h 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 8.9 hr 3.6 hr Short day
February 10.2 hr 4.4 hr Short day
March 11.6 hr 5.7 hr Short day
April 13.3 hr 7.1 hr Neutral
May 14.7 hr 8.1 hr Long day
June 15.4 hr 9.3 hr Long day
July 15.1 hr 9.8 hr Long day
August 13.9 hr 8.6 hr Neutral
September 12.3 hr 6.9 hr Neutral
October 10.7 hr 5.7 hr Short day
November 9.3 hr 3.6 hr Short day
December 8.6 hr 3.3 hr Short day

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

Soil Temperature & Composting Calendar

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

Plant Warm Crops When

Soil reaches 60°F+

Soil warm enough from May through Oct.

Best Month to Compost

Jun

Microbial activity peaks when soil is warm.

Active Composting

7 months

Solid season. Piles go dormant in winter.

60°F 70°F 20° 40° 60° 80° 100° 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 30°F 37°F ❄️ Dormant ~36 weeks
Feb 32°F 38°F ❄️ Dormant ~36 weeks
Mar 37°F 41°F ❄️ Dormant ~36 weeks
Apr 50°F 50°F ♻️ Active ~14 weeks
May 61°F 60°F ♻️ Active ~14 weeks
Jun 71°F 68°F 🔥 Peak ~8 weeks
Jul 82°F 73°F 🔥 Peak ~8 weeks
Aug 83°F 77°F 🔥 Peak ~8 weeks
Sep 74°F 75°F 🔥 Peak ~8 weeks
Oct 62°F 64°F ♻️ Active ~14 weeks
Nov 50°F 54°F 🐢 Slow ~24 weeks
Dec 39°F 46°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 Stormont-Dundas

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

Insect Pest Pressure

6 / 10

Moderate — common pests appear but manageable with monitoring.

Disease Risk

5.3 / 10

Moderate — watch for mildew and blight during wet periods.

Seasonal Risk

Spring Low
Summer High
Fall Low
Winter Low
View 6 common pests in your area
PestRisk LevelPeak Months
Aphids High Apr, May, Jun, Jul, Aug, Sep
Japanese beetles High Jun, Jul, Aug
Squash vine borers Moderate Jun, Jul
Tomato hornworms Moderate Jun, Jul, Aug
Cucumber beetles Low May, Jun, Jul
Stink bugs Low Jun, Jul, Aug, Sep
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 Stormont-Dundas

Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with county-specific planting dates.

Spring Cover Crops (3 options) — Build soil before the main growing season
Crop Plant By Terminate N-Fixing Soil Benefit
Buckwheat Apr 23 Aug 15 Rapid growth, attracts pollinators, suppresses weeds
Sorghum-sudan grass Apr 28 Aug 15 Massive biomass, breaks compaction, suppresses nematodes
White clover Mar 22 Aug 22 ✓ 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 1 Sep 26 Deep roots break compaction, attract pollinators and beneficial insects
Fall Cover Crops (7 options) — Plant after harvest to protect soil over winter
Crop Plant By Terminate N-Fixing Soil Benefit
Austrian winter peas Aug 25 Mar 30 ✓ Yes Fixes nitrogen, good for heavy clay soils
Crimson clover Aug 23 Mar 30 ✓ Yes Fixes nitrogen, attracts pollinators in spring
Daikon radish Aug 31 Apr 6 Deep taproot breaks compaction, excellent for clay soils
Hairy vetch Aug 1 Mar 30 ✓ Yes Excellent nitrogen fixer, good for depleted soils
Oats Sep 4 Apr 6 Quick biomass, winterkills in cold zones — no spring tillage needed
Winter rye Jul 9 Apr 6 Suppresses weeds, prevents erosion, breaks up compacted soil
Winter wheat Jul 18 Mar 30 Erosion control, weed suppression, good biomass

Wind & Microclimate

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

Seasonal Wind Speed

Spring: 12 mph   Summer: 9 mph

Fall: 11 mph   Winter: 13 mph

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

Windbreak Benefit

6.5/10

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

Frost Pocket Risk

Low

Relatively flat terrain (136 ft range). Frost pocket risk is minimal — garden placement is flexible.

Rainwater Harvesting Potential

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

Annual Collection

17,743 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 1,500 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, Mar

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 35.6 inches of rain per year
  • A 1,000 sq ft roof can collect roughly 17,743 gallons annually
  • Rainwater harvesting is fully legal in your state
  • Stock up on stored water before your dry season (Jan, Feb, Mar)
  • Use a first-flush diverter to keep roof debris out of your collection

Soil & Growing Conditions in Stormont-Dundas

Soil Type

Clay Loam

Retains moisture well but slow to warm in spring. Amend with compost to improve drainage.

Watering Needs

Moderate rainfall (35.5 in.) — plan to water 1–2 times per week during the growing season.

Season Tips

180-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.

Free Garden Planner

Plan your entire garden season — organize planting dates, track what you're growing, and know exactly when to start seeds, transplant, and harvest.

Get My Free Planner →

Recommended for Your Garden

📦
Raised Bed Garden Kit $40-120

Cedar raised bed kit — ideal for poor soil, clay, or small-space gardening.

Perlite $10-18

Improve drainage and aeration in heavy clay soils with horticultural perlite.

🏗️
Raised Bed Soil Mix $20-45

Premium blend of topsoil, compost, and perlite formulated for raised beds.

🥬 Vegetables to Grow in Stormont-Dundas

108 vegetables that grow well in Zone 6a with planting dates for Stormont-Dundas.

Show all 108 vegetables with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Acorn Squash Mar 16 Apr 27 May 4 Jul 27 – Aug 31 80–100
Amaranth Feb 23 Apr 27 May 4 Aug 3 – Sep 21 90–120
Arugula Mar 16 Apr 6 Apr 20 May 25 – Jul 27 30–50
Asparagus May 4 730–1095
Beets Apr 6 Jun 1 – Jun 29 50–70
Belgian Endive Mar 16 Apr 6 Apr 20 Aug 10 – Oct 5 110–150
Bitter Melon Feb 23 Apr 27 May 4 Jul 6 – Aug 17 60–90
Black Beans Apr 27 Jul 27 – Sep 14 90–120
Bok Choy Mar 16 Apr 6 Apr 20 Jun 1 – Jul 6 40–60
Broccoli Mar 16 Apr 6 Apr 20 Jun 22 – Aug 3 60–90
Broccoli Rabe Mar 16 Apr 6 Apr 20 Jun 1 – Jul 6 40–60
Brussels Sprouts Mar 16 Apr 6 Apr 20 Jul 20 – Sep 14 90–130
Butternut Squash Mar 16 Apr 27 May 4 Aug 3 – Sep 7 85–110
Cabbage Mar 16 Apr 6 Apr 20 Jun 22 – Aug 17 60–100
Calabash Feb 23 Apr 27 May 4 Jul 27 – Sep 21 80–120
Carrots Apr 6 Jun 8 – Jul 13 60–80
Cauliflower Mar 16 Apr 6 Apr 20 Jun 15 – Aug 17 55–100
Celeriac Mar 16 Apr 6 Apr 20 Aug 3 – Sep 7 100–120
Celery Mar 16 Apr 6 Apr 20 Jul 13 – Sep 7 80–120
Celtuce Mar 16 Apr 6 Apr 20 Jun 22 – Aug 3 60–90
Chard Mar 16 Apr 6 Apr 20 Jun 15 – Aug 3 50–60
Chickpeas Mar 16 Apr 6 Apr 20 Jul 13 – Aug 24 80–110
Chicory Mar 16 Apr 6 Apr 20 Jun 22 – Aug 3 60–85
Chinese Cabbage Mar 16 Apr 6 Apr 20 Jun 15 – Jul 13 50–70
Christmas Lima Beans Feb 23 Apr 27 May 4 Jul 27 – Aug 31 80–100
Collard Greens Mar 16 Apr 6 Apr 20 Jun 15 – Aug 17 55–75
Corn Apr 27 Jun 29 – Aug 24 60–100
Cowpeas Apr 27 Jun 29 – Aug 10 60–90
Cress Mar 16 Apr 6 Apr 20 May 4 – May 25 14–21
Crookneck Squash Mar 16 Apr 27 May 4 Jun 22 – Jul 20 45–60
Crosne Apr 6 Sep 7 – Oct 19 150–200
Cucumber Mar 16 Apr 27 May 4 Jun 29 – Aug 24 50–70
Daikon Apr 6 Jun 1 – Jun 29 50–70
Delicata Squash Mar 16 Apr 27 May 4 Jul 27 – Aug 31 80–100
Edamame Apr 27 Jul 13 – Aug 24 75–100
Eggplant Feb 9 Apr 27 May 4 Jul 13 – Sep 14 65–85
Endive Mar 16 Apr 6 Apr 20 Jun 8 – Jul 13 45–65
Escarole Mar 16 Apr 6 Apr 20 Jun 15 – Jul 13 50–70
Fava Beans Mar 16 Apr 6 Apr 20 Jul 6 – Aug 17 75–100
Fennel Feb 23 Apr 27 May 4 Jul 6 – Aug 17 60–90
Garlic 90–240
Green Beans Apr 27 Jun 22 – Aug 17 50–65
Horseradish May 4 Sep 7 – Nov 16 120–180
Hot Peppers Feb 9 Apr 27 May 4 Jul 13 – Oct 19 70–120
Hubbard Squash Mar 16 Apr 27 May 4 Aug 17 – Sep 21 100–120
Kabocha Mar 16 Apr 27 May 4 Aug 3 – Aug 31 85–100
Kai Lan Mar 16 Apr 6 Apr 20 Jun 8 – Jul 6 45–60
Kale Mar 16 Apr 6 Apr 20 Jun 15 – Aug 10 50–70
Kidney Beans Apr 27 Jul 27 – Aug 31 85–110
Kohlrabi Mar 16 Apr 6 Apr 20 Jun 8 – Jul 13 45–65
Komatsuna Mar 16 Apr 6 Apr 20 May 25 – Jun 29 35–50
Leeks Mar 16 Apr 6 Apr 20 Jul 20 – Oct 5 90–150
Lentils Mar 16 Apr 6 Apr 20 Jul 13 – Aug 24 80–110
Lettuce Mar 16 Apr 6 Apr 20 May 25 – Aug 3 30–60
Lima Beans Apr 27 Jun 29 – Aug 10 60–90
Loofah Feb 23 Apr 27 May 4 Aug 17 – Oct 19 100–150
Luffa Feb 23 Apr 27 May 4 Aug 3 – Oct 19 90–150
Mache Mar 16 Apr 6 Apr 20 Jun 1 – Jul 6 40–60
Melon Mar 16 Apr 27 May 4 Jul 13 – Aug 31 70–100
Microgreens Mar 16 Apr 6 Apr 20 Apr 27 – May 25 7–21
Mitsuba Mar 16 Apr 6 Apr 13 Jun 8 – Aug 3 50–70
Mizuna Mar 16 Apr 6 Apr 20 May 25 – Jun 22 30–45
Mustard Greens Mar 16 Apr 6 Apr 20 May 25 – Jul 27 30–50
Napa Cabbage Mar 16 Apr 6 Apr 20 Jun 15 – Jul 20 55–75
New Zealand Spinach Feb 23 Apr 27 May 4 Jun 29 – Jul 27 55–70
Okra Feb 23 Apr 27 May 4 Jun 29 – Aug 24 50–65
Onion Mar 16 Apr 6 Apr 20 Jul 20 – Sep 7 90–120
Pac Choi Mar 16 Apr 6 Apr 20 Jun 1 – Jun 29 40–55
Parsnip Apr 6 Jul 20 – Aug 31 100–130
Patty Pan Squash Mar 16 Apr 27 May 4 Jun 22 – Jul 20 45–60
Peas Mar 16 Apr 6 Apr 20 Jun 15 – Aug 10 55–70
Peppers Feb 9 Apr 27 May 4 Jul 6 – Sep 14 60–90
Pole Beans Feb 23 Apr 27 May 4 Jun 29 – Aug 24 55–70
Potatoes Feb 23 Apr 27 May 4 Jul 13 – Sep 21 70–120
Pumpkin Mar 16 Apr 27 May 4 Aug 3 – Sep 21 85–120
Purslane Mar 16 Apr 6 Apr 20 Jun 1 – Jul 6 40–60
Radicchio Mar 16 Apr 6 Apr 20 Jun 22 – Jul 27 60–80
Radish Apr 6 May 4 – May 25 22–35
Rhubarb May 11 365–730
Romanesco Mar 16 Apr 6 Apr 20 Jul 6 – Aug 17 75–100
Rutabaga Apr 6 Jun 29 – Aug 3 80–100
Salsify Apr 6 Jul 20 – Aug 31 100–130
Savoy Cabbage Mar 16 Apr 6 Apr 20 Jun 29 – Aug 24 70–110
Scallions Mar 16 Apr 6 Apr 20 Jun 15 – Jul 13 50–70
Scarlet Runner Beans Feb 23 Apr 27 May 4 Jul 6 – Aug 10 60–80
Shallot Mar 16 Apr 6 Apr 20 Jul 20 – Sep 7 90–120
Shiso Mar 2 Apr 27 May 4 Jun 29 – Aug 24 50–70
Snap Peas Feb 23 Apr 27 May 4 Jun 29 – Aug 24 55–70
Snow Peas Mar 16 Apr 6 Apr 20 Jun 15 – Aug 10 50–65
Soybeans Apr 27 Jul 20 – Sep 14 80–120
Spaghetti Squash Mar 16 Apr 27 May 4 Aug 3 – Aug 31 85–100
Spinach Mar 16 Apr 6 Apr 20 May 25 – Jul 27 35–50
Squash (Summer) Mar 16 Apr 27 May 4 Jun 22 – Aug 24 45–65
Squash (Winter) Mar 16 Apr 27 May 4 Jul 27 – Sep 21 80–120
Sunchoke May 4 Aug 24 – Oct 19 110–150
Sunflower Feb 23 Apr 27 May 4 Jul 13 – Aug 31 70–100
Sweet Corn Apr 27 Jun 29 – Aug 10 60–90
Sweet Potatoes Feb 23 Apr 27 May 4 Aug 3 – Sep 21 90–120
Tatsoi Mar 16 Apr 6 Apr 20 May 25 – Jun 29 35–50
Tomatillo Feb 23 Apr 27 May 4 Jul 6 – Sep 14 60–85
Tomatoes Feb 23 Apr 27 May 4 Jul 6 – Sep 14 60–85
Turnip Apr 6 May 18 – Jun 22 40–60
Watercress Mar 16 Apr 6 Apr 20 Jun 1 – Jul 6 40–60
Watermelon Mar 16 Apr 27 May 4 Jul 13 – Aug 31 70–100
Wax Beans Apr 27 Jun 22 – Aug 17 50–65
Winter Melon Feb 23 Apr 27 May 4 Aug 3 – Sep 21 90–120
Yard Long Beans Feb 23 Apr 27 May 4 Jun 29 – Aug 10 55–80
Zucchini Mar 16 Apr 27 May 4 Jun 22 – Aug 17 45–60

🍓 Fruits to Grow in Stormont-Dundas

27 fruits that grow well in Zone 6a with planting dates for Stormont-Dundas.

Show all 27 fruits with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Alpine Strawberries May 11 Aug 10 – Nov 23 90–180
Aronia May 11 730–1095
Blackberries May 11 365–730
Blueberries May 11 730–1095
Boysenberries May 11 365–730
Cantaloupe May 11 Jul 20 – Aug 24 70–90
Che Fruit May 11 1095–1825
Cranberries May 11 730–1095
Currants May 11 730–1095
Elderberries May 11 730–1095
Goji Berries May 11 730–1095
Gooseberries May 11 730–1095
Grapes May 11 730–1095
Ground Cherry May 11 Jul 20 – Sep 14 65–80
Hardy Kiwi May 11 1095–1825
Haskaps May 11 730–1095
Honeydew May 11 Aug 3 – Sep 14 80–110
Jostaberry May 11 730–1095
Lingonberries May 11 730–1095
Medlar May 11 1095–1825
Mulberries May 11 730–1825
Pawpaw May 11 1095–2555
Persimmon May 11 1095–2555
Quince May 11 1095–1825
Raspberries May 11 365–730
Serviceberries May 11 730–1095
Strawberries May 11 Aug 10 – Nov 23 90–365

🌿 Herbs to Grow in Stormont-Dundas

38 herbs that grow well in Zone 6a with planting dates for Stormont-Dundas.

Show all 38 herbs with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Angelica Mar 16 Apr 6 Apr 13 365–730
Anise Mar 16 Apr 6 Apr 13 Jul 13 – Sep 28 90–120
Basil Mar 2 Apr 27 May 4 Jun 29 – Aug 31 50–75
Bee Balm Apr 27 Jul 27 – Oct 12 90–120
Borage Mar 16 Apr 6 Apr 13 Jun 8 – Jul 27 50–60
Caraway Mar 16 Apr 6 Apr 13 365–450
Catnip Apr 27 Jun 29 – Aug 31 60–80
Chamomile Mar 16 Apr 6 Apr 13 Jun 15 – Aug 24 60–90
Chervil Mar 16 Apr 6 Apr 13 May 25 – Jul 27 40–60
Chives Apr 27 Jun 29 – Sep 7 60–90
Cilantro Mar 16 Apr 6 Apr 13 May 25 – Jul 27 40–60
Comfrey Apr 27 Jun 29 – Sep 7 60–90
Cumin Mar 16 Apr 6 Apr 13 Jul 27 – Sep 28 100–120
Dill Mar 16 Apr 6 Apr 13 May 25 – Jul 27 40–60
Echinacea Apr 27 Aug 31 – Nov 9 120–180
Epazote Mar 2 Apr 27 May 4 Jun 22 – Aug 17 45–60
Fennel (herb) Mar 16 Apr 6 Apr 13 Jun 15 – Aug 24 60–90
Feverfew Apr 27 Jul 27 – Oct 12 90–120
Garlic Chives Apr 27 Jun 29 – Sep 7 60–90
Horehound Apr 27 Jul 13 – Sep 7 75–90
Hyssop Apr 27 Jul 6 – Sep 7 70–90
Lavender Apr 27 Jul 27 – Nov 9 90–200
Lemon Balm Apr 27 Jun 29 – Aug 17 60–70
Lemon Thyme Apr 27 Jul 6 – Sep 7 70–90
Lovage Apr 27 Jul 6 – Sep 7 70–90
Marjoram Apr 27 Jun 29 – Sep 7 60–90
Mint Apr 27 Jun 29 – Sep 7 60–90
Oregano Apr 27 Jun 29 – Sep 7 60–90
Parsley Mar 16 Apr 6 Apr 13 Jun 15 – Aug 17 60–80
Rue Apr 27 Jul 6 – Sep 7 70–90
Sage Apr 27 Jul 13 – Sep 7 75–90
Savory Apr 27 Jun 22 – Aug 17 50–70
Sorrel Mar 16 Apr 6 Apr 13 May 25 – Jul 27 40–60
Tarragon Apr 27 Jun 29 – Sep 7 60–90
Thai Basil Mar 2 Apr 27 May 4 Jun 29 – Aug 31 50–75
Thyme Apr 27 Jul 6 – Sep 7 70–90
Valerian Apr 27 Aug 31 – Nov 9 120–180
Yarrow Apr 27 Jul 27 – Oct 12 90–120

Monthly Planting Guide for Stormont-Dundas

Gardening Guides & Resources

Helpful guides from The Ultimate Homestead to improve your garden in Stormont-Dundas.

Frequently Asked Questions

What planting zone is Stormont-Dundas, ON?

Stormont-Dundas is in USDA Hardiness Zone 6a. 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 Stormont-Dundas, ON?

Based on 30 years of NOAA weather station data, the median last spring frost in Stormont-Dundas falls around April 20. Plan transplants and direct-sow dates relative to this date.

When is the first fall frost in Stormont-Dundas, ON?

The median first fall frost in Stormont-Dundas arrives around October 17. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.

Is Stormont-Dundas a good location for home gardening?

Stormont-Dundas scores 95/100 (Excellent) on our Microclimate Index, which combines frost reliability, drought pressure, soil challenge, elevation risk, and long-term climate trend. This is an above-average location for home gardening with relatively predictable growing conditions.

🌱

Plan Your Garden with Confidence

Get our free Garden Planner — designed to help Stormont-Dundas gardeners in Zone 6a organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Level Up Your Garden

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates represent 50% probability averages; local conditions vary by elevation and microclimate. Last updated: April 2026.