Hamilton, ON — Planting Guide
Hamilton is in USDA Zone 8a. The average last spring frost is March 26 and the first fall frost is November 1, giving you a growing season of approximately 220 days.
At an elevation of 246 ft, Hamilton receives approximately 45.6 in of rainfall annually. Summer highs average 93°F with winter lows around 45°F. The predominant soil type is Clay Loam.
🌡️ Zone
8a (10°F to 15°F min)
❄️ Last Frost
March 26
🍂 First Frost
November 1
📅 Growing Season
220 days
⛰️ Elevation
246 ft
🌧️ Annual Rainfall
45.6 in
Monthly Watering Calendar for Hamilton
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
The practical takeaway: In humid climates, watering is usually about timing (morning, not evening, to prevent disease) more than volume. In dry climates, it's about depth (water deep, less often) more than frequency. Hamilton's 46" annual tells you which side you're on.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 2 in | 9 days | — | None |
| Feb | 2.2 in | 6 days | 2.1 in | High |
| Mar | 3.3 in | 8 days | 1 in | Moderate |
| Apr | 4.1 in | 8 days | 0.2 in | Low |
| May | 4.9 in | 11 days | — | Low |
| Jun | 6.4 in | 8 days | — | Low |
| Jul | 5.3 in | 7 days | — | Low |
| Aug | 4.1 in | 8 days | 0.2 in | Low |
| Sep | 4.1 in | 7 days | 0.2 in | Low |
| Oct | 3.4 in | 7 days | 0.9 in | Moderate |
| Nov | 3.1 in | 8 days | 1.2 in | Moderate |
| Dec | 2.8 in | 8 days | — | None |
Annual total: 45.7 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.
Hamilton Soil Profile
Soil Type
Clay Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Gardening Difficulty Score
Hamilton is a very forgiving place to garden. Most plants thrive here with minimal effort.
Local Gardening Help in Hamilton
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 Hamilton's climate and soil.
County Extension Office
Hamilton 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 Hamilton
Finding local nurseries & garden centers in Hamilton
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Hamilton'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 Hamilton ON" or "garden center Hamilton" 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 Hamilton ON" or check your extension office and local parks department. Facebook groups like "Hamilton 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
Sunlight & Day Length in Hamilton
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
What this means for you: Day length is the trigger that tells lettuce, spinach, and cilantro to bolt. In Hamilton, knowing when that day-length threshold arrives helps you plant a final round in time to harvest before it bolts.
Longest Day
15.2 hours
Summer solstice daylight
Shortest Day
8.8 hours
Winter solstice daylight
Peak Sun Hours
9.5 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.
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
| Month | Daylight Hours | Peak Sun Hours | Day Length |
|---|---|---|---|
| January | 9.1 hr | 3.7 hr | Short day |
| February | 10.3 hr | 4.7 hr | Short day |
| March | 11.6 hr | 5.8 hr | Short day |
| April | 13.2 hr | 6.8 hr | Neutral |
| May | 14.5 hr | 8.6 hr | Long day |
| June | 15.2 hr | 9.2 hr | Long day |
| July | 14.9 hr | 9.5 hr | Long day |
| August | 13.8 hr | 8.2 hr | Neutral |
| September | 12.3 hr | 7 hr | Neutral |
| October | 10.8 hr | 5.6 hr | Short day |
| November | 9.5 hr | 4 hr | Short day |
| December | 8.8 hr | 3.2 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting in Hamilton
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
Why it matters: Air temperature lies. Your air can be 70°F in April but the soil 4 inches down is still 50°F — too cold for tomatoes or peppers to root properly. Hamilton's soil temperature curve tells you the real planting window. A $5 soil thermometer pays for itself in one season.
Plant Warm Crops When
Soil reaches 60°F+
Soil warm enough from Apr through Oct.
Best Month to Compost
May
Microbial activity peaks when soil is warm.
Active Composting
10 months
Nearly year-round composting.
View detailed monthly data
| Month | Soil 4" Deep | Soil 8" Deep | Compost Activity | Time to Finish |
|---|---|---|---|---|
| Jan | 45°F | 52°F | 🐢 Slow | ~24 weeks |
| Feb | 47°F | 50°F | 🐢 Slow | ~24 weeks |
| Mar | 52°F | 53°F | ♻️ Active | ~14 weeks |
| Apr | 60°F | 60°F | ♻️ Active | ~14 weeks |
| May | 70°F | 69°F | 🔥 Peak | ~8 weeks |
| Jun | 83°F | 76°F | 🔥 Peak | ~8 weeks |
| Jul | 90°F | 82°F | 🔥 Peak | ~8 weeks |
| Aug | 88°F | 85°F | 🔥 Peak | ~8 weeks |
| Sep | 85°F | 82°F | 🔥 Peak | ~8 weeks |
| Oct | 72°F | 75°F | 🔥 Peak | ~8 weeks |
| Nov | 60°F | 66°F | ♻️ Active | ~14 weeks |
| Dec | 51°F | 56°F | ♻️ Active | ~14 weeks |
Highlighted rows = soil 60°F+ (safe for warm-season transplants). Compost finishes fastest during peak activity months.
Pest & Disease Pressure in Hamilton
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
What this means for you: High pest pressure means weekly inspection. Low pest pressure means monthly. The score tells you which routine to set up before you have a problem.
Insect Pest Pressure
High — expect multiple pest generations. Preventative measures essential.
Disease Risk
High fungal/bacterial risk. Space plants for airflow, water at soil level.
Seasonal Risk
View 6 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | High | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov |
| Squash vine borers | Moderate | May, Jun, Jul |
| Stink bugs | High | Apr, May, Jun, Jul, Aug, Sep, Oct |
| Whiteflies | Moderate | May, Jun, Jul, Aug, Sep, Oct |
| Spider mites | Moderate | Jun, Jul, Aug, Sep |
| Fire ants | Low | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct |
Organic pest management tips
- Install physical barriers: floating row covers, copper tape for slugs, mesh netting
- Apply Bt (Bacillus thuringiensis) for caterpillar control — safe for beneficial insects
- Use kaolin clay spray to deter a wide range of insects on fruiting crops
- Release beneficial insects: ladybugs for aphids, parasitic wasps for caterpillars
- Apply neem oil weekly during high-pressure months
- Mulch heavily (3-4 inches) to reduce soil-borne disease splash
Cover Crops for Hamilton
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: You don't need a farm to use cover crops. A 4x8 raised bed accepts cover crops just as well as a half-acre. Hamilton's climate determines the calendar; the principle is universal.
Spring Cover Crops (4 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | Mar 31 | Sep 6 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Cowpeas (southern peas) | Apr 6 | Aug 30 | ✓ Yes | Excellent nitrogen fixer for warm climates, edible |
| Sorghum-sudan grass | Mar 29 | Aug 23 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Feb 27 | Aug 30 | ✓ 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 | Apr 17 | Oct 4 | — | 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 31 | Mar 12 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Aug 25 | Mar 12 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Sep 17 | Mar 12 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Aug 17 | Mar 12 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Oct 7 | Mar 12 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Aug 2 | Mar 12 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 31 | Mar 5 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Hamilton
What this means for you: Pollinators avoid windy days. Hamilton's 9.9 mph average wind isn't enough to stop bees and butterflies — but plant fruiting crops (tomatoes, peppers, squash) in protected microclimates and you'll see noticeably better fruit set.
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: 11 mph Winter: 12 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
7.2/10
Strongly recommended — a windbreak (fence, hedge, or row of tall crops like corn or sunflowers) will significantly improve garden yields.
Frost Pocket Risk
Low
Relatively flat terrain (126 ft range). Frost pocket risk is minimal — garden placement is flexible.
Rainwater Harvesting in Hamilton
How much water you can collect, when to collect it, and what size system you need for your garden.
For new gardeners: Rainwater is unchlorinated, unfluoridated, and at ambient temperature — plants actually prefer it. Hamilton's 46" annual rainfall means even a small 50-gallon barrel catches enough for a few weeks of garden watering between storms.
Annual Collection
22,776 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 1,250 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
Apr, May, Jun, Jul
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 45.7 inches of rain per year
- A 1,000 sq ft roof can collect roughly 22,776 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
Soil & Growing Conditions in Hamilton
Soil Type
Clay Loam
Retains moisture well but slow to warm in spring. Amend with compost to improve drainage.
Watering Needs
Moderate rainfall (45.6 in.) — plan to water 1–2 times per week during the growing season.
Season Tips
220-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
Cedar raised bed kit — ideal for poor soil, clay, or small-space gardening.
Improve drainage and aeration in heavy clay soils with horticultural perlite.
Premium blend of topsoil, compost, and perlite formulated for raised beds.
🥬 Vegetables to Grow in Hamilton
114 vegetables that grow well in Zone 8a with planting dates for Hamilton.
Show all 114 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Feb 26 | Apr 2 | Apr 9 | — | Jul 2 – Aug 6 | 80–100 |
| Amaranth | Feb 5 | Apr 2 | Apr 9 | — | Jul 9 – Aug 27 | 90–120 |
| Artichoke | — | — | Apr 9 | — | Aug 13 – Oct 22 | 120–180 |
| Arugula | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Apr 30 – Jul 2 | 30–50 |
| Asparagus | — | — | Apr 9 | — | — | 730–1095 |
| Beets | — | Mar 12 | — | Aug 23 | May 7 – Jun 4 | 50–70 |
| Belgian Endive | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Jul 16 – Sep 10 | 110–150 |
| Bitter Melon | Feb 5 | Apr 2 | Apr 9 | — | Jun 11 – Jul 23 | 60–90 |
| Black Beans | — | Apr 2 | — | — | Jul 2 – Aug 20 | 90–120 |
| Bok Choy | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 7 – Jun 11 | 40–60 |
| Broccoli | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 28 – Jul 9 | 60–90 |
| Broccoli Rabe | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 7 – Jun 11 | 40–60 |
| Brussels Sprouts | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Jun 25 – Aug 20 | 90–130 |
| Butternut Squash | Feb 26 | Apr 2 | Apr 9 | — | Jul 9 – Aug 13 | 85–110 |
| Cabbage | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 28 – Jul 23 | 60–100 |
| Calabash | Feb 5 | Apr 2 | Apr 9 | — | Jul 2 – Aug 27 | 80–120 |
| Cardoon | — | — | Apr 9 | — | Aug 13 – Sep 24 | 120–150 |
| Carrots | — | Mar 12 | — | Aug 23 | May 14 – Jun 18 | 60–80 |
| Cauliflower | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 21 – Jul 23 | 55–100 |
| Celeriac | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Jul 9 – Aug 13 | 100–120 |
| Celery | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Jun 18 – Aug 13 | 80–120 |
| Celtuce | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 28 – Jul 9 | 60–90 |
| Chard | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 21 – Jul 9 | 50–60 |
| Chayote | Feb 5 | Apr 2 | Apr 9 | — | Aug 13 – Oct 22 | 120–180 |
| Chickpeas | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Jun 18 – Jul 30 | 80–110 |
| Chicory | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 28 – Jul 9 | 60–85 |
| Chinese Cabbage | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 21 – Jun 18 | 50–70 |
| Christmas Lima Beans | Feb 5 | Apr 2 | Apr 9 | — | Jul 2 – Aug 6 | 80–100 |
| Collard Greens | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 21 – Jul 23 | 55–75 |
| Corn | — | Apr 2 | — | — | Jun 4 – Jul 30 | 60–100 |
| Cowpeas | — | Apr 2 | — | — | Jun 4 – Jul 16 | 60–90 |
| Cress | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Apr 9 – Apr 30 | 14–21 |
| Crookneck Squash | Feb 26 | Apr 2 | Apr 9 | — | May 28 – Jun 25 | 45–60 |
| Crosne | — | Mar 12 | — | Aug 23 | Aug 13 – Oct 15 | 150–200 |
| Cucumber | Feb 26 | Apr 2 | Apr 9 | — | Jun 4 – Jul 30 | 50–70 |
| Daikon | — | Mar 12 | — | Aug 23 | May 7 – Jun 4 | 50–70 |
| Delicata Squash | Feb 26 | Apr 2 | Apr 9 | — | Jul 2 – Aug 6 | 80–100 |
| Edamame | — | Apr 2 | — | — | Jun 18 – Jul 30 | 75–100 |
| Eggplant | Jan 22 | Apr 2 | Apr 9 | — | Jun 18 – Aug 20 | 65–85 |
| Endive | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 14 – Jun 18 | 45–65 |
| Escarole | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 21 – Jun 18 | 50–70 |
| Fava Beans | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Jun 11 – Jul 23 | 75–100 |
| Fennel | Feb 5 | Apr 2 | Apr 9 | — | Jun 11 – Jul 23 | 60–90 |
| Garlic | — | — | — | Sep 20 | Dec 20 – Jun 6 | 90–240 |
| Ginger | Feb 5 | Apr 2 | Apr 9 | — | Dec 10 – Dec 24 | 240–300 |
| Green Beans | — | Apr 2 | — | — | May 28 – Jul 23 | 50–65 |
| Horseradish | — | — | Apr 9 | — | Aug 13 – Oct 22 | 120–180 |
| Hot Peppers | Jan 22 | Apr 2 | Apr 9 | — | Jun 18 – Sep 24 | 70–120 |
| Hubbard Squash | Feb 26 | Apr 2 | Apr 9 | — | Jul 23 – Aug 27 | 100–120 |
| Jicama | Feb 5 | Apr 2 | Apr 9 | — | Aug 13 – Oct 22 | 120–180 |
| Kabocha | Feb 26 | Apr 2 | Apr 9 | — | Jul 9 – Aug 6 | 85–100 |
| Kai Lan | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 14 – Jun 11 | 45–60 |
| Kale | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 21 – Jul 16 | 50–70 |
| Kidney Beans | — | Apr 2 | — | — | Jul 2 – Aug 6 | 85–110 |
| Kohlrabi | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 14 – Jun 18 | 45–65 |
| Komatsuna | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Apr 30 – Jun 4 | 35–50 |
| Leeks | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Jun 25 – Sep 10 | 90–150 |
| Lentils | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Jun 18 – Jul 30 | 80–110 |
| Lettuce | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Apr 30 – Jul 9 | 30–60 |
| Lima Beans | — | Apr 2 | — | — | Jun 4 – Jul 16 | 60–90 |
| Loofah | Feb 5 | Apr 2 | Apr 9 | — | Jul 23 – Sep 24 | 100–150 |
| Luffa | Feb 5 | Apr 2 | Apr 9 | — | Jul 9 – Sep 24 | 90–150 |
| Mache | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 7 – Jun 11 | 40–60 |
| Malabar Spinach | Feb 5 | Apr 2 | Apr 9 | — | Jun 4 – Jul 2 | 55–70 |
| Melon | Feb 26 | Apr 2 | Apr 9 | — | Jun 18 – Aug 6 | 70–100 |
| Microgreens | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Apr 2 – Apr 30 | 7–21 |
| Mitsuba | Feb 19 | Mar 12 | Mar 19 | Aug 23 | May 14 – Jul 9 | 50–70 |
| Mizuna | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Apr 30 – May 28 | 30–45 |
| Mustard Greens | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Apr 30 – Jul 2 | 30–50 |
| Napa Cabbage | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 21 – Jun 25 | 55–75 |
| New Zealand Spinach | Feb 5 | Apr 2 | Apr 9 | — | Jun 4 – Jul 2 | 55–70 |
| Okra | Feb 5 | Apr 2 | Apr 9 | — | Jun 4 – Jul 30 | 50–65 |
| Onion | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Jun 25 – Aug 13 | 90–120 |
| Pac Choi | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 7 – Jun 4 | 40–55 |
| Parsnip | — | Mar 12 | — | Aug 23 | Jun 25 – Aug 6 | 100–130 |
| Patty Pan Squash | Feb 26 | Apr 2 | Apr 9 | — | May 28 – Jun 25 | 45–60 |
| Peas | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 21 – Jul 16 | 55–70 |
| Peppers | Jan 22 | Apr 2 | Apr 9 | — | Jun 11 – Aug 20 | 60–90 |
| Pole Beans | Feb 5 | Apr 2 | Apr 9 | — | Jun 4 – Jul 30 | 55–70 |
| Potatoes | Feb 5 | Apr 2 | Apr 9 | — | Jun 18 – Aug 27 | 70–120 |
| Pumpkin | Feb 26 | Apr 2 | Apr 9 | — | Jul 9 – Aug 27 | 85–120 |
| Purslane | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 7 – Jun 11 | 40–60 |
| Radicchio | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 28 – Jul 2 | 60–80 |
| Radish | — | Mar 12 | — | Aug 23 | Apr 9 – Apr 30 | 22–35 |
| Rhubarb | — | — | Apr 16 | — | — | 365–730 |
| Romanesco | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Jun 11 – Jul 23 | 75–100 |
| Rutabaga | — | Mar 12 | — | Aug 23 | Jun 4 – Jul 9 | 80–100 |
| Salsify | — | Mar 12 | — | Aug 23 | Jun 25 – Aug 6 | 100–130 |
| Savoy Cabbage | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Jun 4 – Jul 30 | 70–110 |
| Scallions | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 21 – Jun 18 | 50–70 |
| Scarlet Runner Beans | Feb 5 | Apr 2 | Apr 9 | — | Jun 11 – Jul 16 | 60–80 |
| Shallot | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Jun 25 – Aug 13 | 90–120 |
| Shiso | Feb 5 | Apr 2 | Apr 9 | — | Jun 4 – Jul 30 | 50–70 |
| Snap Peas | Feb 5 | Apr 2 | Apr 9 | — | Jun 4 – Jul 30 | 55–70 |
| Snow Peas | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 21 – Jul 16 | 50–65 |
| Soybeans | — | Apr 2 | — | — | Jun 25 – Aug 20 | 80–120 |
| Spaghetti Squash | Feb 26 | Apr 2 | Apr 9 | — | Jul 9 – Aug 6 | 85–100 |
| Spinach | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Apr 30 – Jul 2 | 35–50 |
| Squash (Summer) | Feb 26 | Apr 2 | Apr 9 | — | May 28 – Jul 30 | 45–65 |
| Squash (Winter) | Feb 26 | Apr 2 | Apr 9 | — | Jul 2 – Aug 27 | 80–120 |
| Sunchoke | — | — | Apr 9 | — | Jul 30 – Sep 24 | 110–150 |
| Sweet Corn | — | Apr 2 | — | — | Jun 4 – Jul 16 | 60–90 |
| Sweet Potatoes | Feb 5 | Apr 2 | Apr 9 | — | Jul 9 – Aug 27 | 90–120 |
| Tatsoi | Feb 19 | Mar 12 | Mar 26 | Aug 23 | Apr 30 – Jun 4 | 35–50 |
| Tomatillo | Feb 5 | Apr 2 | Apr 9 | — | Jun 11 – Aug 20 | 60–85 |
| Tomatoes | Feb 5 | Apr 2 | Apr 9 | — | Jun 11 – Aug 20 | 60–85 |
| Turmeric | Feb 5 | Apr 2 | Apr 9 | — | Dec 10 – Dec 24 | 240–300 |
| Turnip | — | Mar 12 | — | Aug 23 | Apr 23 – May 28 | 40–60 |
| Watercress | Feb 19 | Mar 12 | Mar 26 | Aug 23 | May 7 – Jun 11 | 40–60 |
| Watermelon | Feb 26 | Apr 2 | Apr 9 | — | Jun 18 – Aug 6 | 70–100 |
| Wax Beans | — | Apr 2 | — | — | May 28 – Jul 23 | 50–65 |
| Winter Melon | Feb 5 | Apr 2 | Apr 9 | — | Jul 9 – Aug 27 | 90–120 |
| Yard Long Beans | Feb 5 | Apr 2 | Apr 9 | — | Jun 4 – Jul 16 | 55–80 |
| Zucchini | Feb 26 | Apr 2 | Apr 9 | — | May 28 – Jul 23 | 45–60 |
🍓 Fruits to Grow in Hamilton
27 fruits that grow well in Zone 8a with planting dates for Hamilton.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Apr 16 | — | Jul 16 – Oct 29 | 90–180 |
| Aronia | — | — | Apr 16 | — | — | 730–1095 |
| Blackberries | — | — | Apr 16 | — | — | 365–730 |
| Blueberries | — | — | Apr 16 | — | — | 730–1095 |
| Boysenberries | — | — | Apr 16 | — | — | 365–730 |
| Cantaloupe | — | — | Apr 16 | — | Jun 25 – Jul 30 | 70–90 |
| Che Fruit | — | — | Apr 16 | — | — | 1095–1825 |
| Elderberries | — | — | Apr 16 | — | — | 730–1095 |
| Figs | — | — | Apr 16 | — | — | 730–1825 |
| Goji Berries | — | — | Apr 16 | — | — | 730–1095 |
| Gooseberries | — | — | Apr 16 | — | — | 730–1095 |
| Grapes | — | — | Apr 16 | — | — | 730–1095 |
| Ground Cherry | — | — | Apr 16 | — | Jun 25 – Aug 20 | 65–80 |
| Hardy Kiwi | — | — | Apr 16 | — | — | 1095–1825 |
| Honeydew | — | — | Apr 16 | — | Jul 9 – Aug 20 | 80–110 |
| Jostaberry | — | — | Apr 16 | — | — | 730–1095 |
| Kiwi | — | — | Apr 16 | — | — | 1095–1825 |
| Loquat | — | — | Apr 16 | — | — | 730–1825 |
| Medlar | — | — | Apr 16 | — | — | 1095–1825 |
| Mulberries | — | — | Apr 16 | — | — | 730–1825 |
| Pawpaw | — | — | Apr 16 | — | — | 1095–2555 |
| Persimmon | — | — | Apr 16 | — | — | 1095–2555 |
| Pomegranate | — | — | Apr 16 | — | — | 730–1095 |
| Quince | — | — | Apr 16 | — | — | 1095–1825 |
| Raspberries | — | — | Apr 16 | — | — | 365–730 |
| Serviceberries | — | — | Apr 16 | — | — | 730–1095 |
| Strawberries | — | — | Apr 16 | — | Jul 16 – Dec 31 | 90–365 |
🌿 Herbs to Grow in Hamilton
39 herbs that grow well in Zone 8a with planting dates for Hamilton.
Show all 39 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Feb 19 | Mar 12 | Mar 19 | Aug 23 | — | 365–730 |
| Anise | Feb 19 | Mar 12 | Mar 19 | Aug 23 | Jun 18 – Sep 3 | 90–120 |
| Basil | Feb 5 | Apr 2 | Apr 9 | — | Jun 4 – Aug 6 | 50–75 |
| Bee Balm | — | — | Apr 2 | — | Jul 2 – Sep 17 | 90–120 |
| Borage | Feb 19 | Mar 12 | Mar 19 | Aug 23 | May 14 – Jul 2 | 50–60 |
| Caraway | Feb 19 | Mar 12 | Mar 19 | Aug 23 | — | 365–450 |
| Catnip | — | — | Apr 2 | — | Jun 4 – Aug 6 | 60–80 |
| Chamomile | Feb 19 | Mar 12 | Mar 19 | Aug 23 | May 21 – Jul 30 | 60–90 |
| Chervil | Feb 19 | Mar 12 | Mar 19 | Aug 23 | Apr 30 – Jul 2 | 40–60 |
| Chives | — | — | Apr 2 | — | Jun 4 – Aug 13 | 60–90 |
| Cilantro | Feb 19 | Mar 12 | Mar 19 | Aug 23 | Apr 30 – Jul 2 | 40–60 |
| Comfrey | — | — | Apr 2 | — | Jun 4 – Aug 13 | 60–90 |
| Cumin | Feb 19 | Mar 12 | Mar 19 | Aug 23 | Jul 2 – Sep 3 | 100–120 |
| Dill | Feb 19 | Mar 12 | Mar 19 | Aug 23 | Apr 30 – Jul 2 | 40–60 |
| Epazote | Feb 5 | Apr 2 | Apr 9 | — | May 28 – Jul 23 | 45–60 |
| Fennel (herb) | Feb 19 | Mar 12 | Mar 19 | Aug 23 | May 21 – Jul 30 | 60–90 |
| Feverfew | — | — | Apr 2 | — | Jul 2 – Sep 17 | 90–120 |
| Garlic Chives | — | — | Apr 2 | — | Jun 4 – Aug 13 | 60–90 |
| Horehound | — | — | Apr 2 | — | Jun 18 – Aug 13 | 75–90 |
| Hyssop | — | — | Apr 2 | — | Jun 11 – Aug 13 | 70–90 |
| Lemon Balm | — | — | Apr 2 | — | Jun 4 – Jul 23 | 60–70 |
| Lemon Thyme | — | — | Apr 2 | — | Jun 11 – Aug 13 | 70–90 |
| Lemon Verbena | Feb 5 | Apr 2 | Apr 9 | — | Jun 11 – Aug 20 | 60–90 |
| Lemongrass | Feb 5 | Apr 2 | Apr 9 | — | Jun 25 – Sep 24 | 75–120 |
| Lovage | — | — | Apr 2 | — | Jun 11 – Aug 13 | 70–90 |
| Marjoram | — | — | Apr 2 | — | Jun 4 – Aug 13 | 60–90 |
| Mint | — | — | Apr 2 | — | Jun 4 – Aug 13 | 60–90 |
| Oregano | — | — | Apr 2 | — | Jun 4 – Aug 13 | 60–90 |
| Parsley | Feb 19 | Mar 12 | Mar 19 | Aug 23 | May 21 – Jul 23 | 60–80 |
| Rosemary | — | — | Apr 2 | — | Jun 25 – Nov 12 | 80–180 |
| Rue | — | — | Apr 2 | — | Jun 11 – Aug 13 | 70–90 |
| Sage | — | — | Apr 2 | — | Jun 18 – Aug 13 | 75–90 |
| Savory | — | — | Apr 2 | — | May 28 – Jul 23 | 50–70 |
| Sorrel | Feb 19 | Mar 12 | Mar 19 | Aug 23 | Apr 30 – Jul 2 | 40–60 |
| Stevia | Feb 5 | Apr 2 | Apr 9 | — | Jun 11 – Aug 20 | 60–90 |
| Tarragon | — | — | Apr 2 | — | Jun 4 – Aug 13 | 60–90 |
| Thai Basil | Feb 5 | Apr 2 | Apr 9 | — | Jun 4 – Aug 6 | 50–75 |
| Thyme | — | — | Apr 2 | — | Jun 11 – Aug 13 | 70–90 |
| Valerian | — | — | Apr 2 | — | Aug 6 – Nov 12 | 120–180 |
🌸 Flowers to Grow in Hamilton
54 flowers that grow well in Zone 8a with planting dates for Hamilton.
Show all 54 flowers with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Feb 12 | Mar 19 | Mar 19 | — | May 14 – Oct 1 | 60–75 |
| Alliums | — | — | — | Sep 27 | Oct 25 – Nov 15 | 28–42 |
| Anemones | — | — | — | Sep 6 | Sep 20 – Oct 18 | 90–120 |
| Astilbe | Jan 29 | — | Mar 26 | — | Jun 4 – Jul 23 | 70–100 |
| Bachelor's Button | — | Feb 12 | Mar 12 | Sep 6 | May 14 – Aug 27 | 60–90 |
| Begonias | Jan 15 | — | Mar 19 | — | May 28 – Oct 15 | 70–90 |
| Black-eyed Susan | Jan 29 | Mar 19 | Mar 26 | — | Jun 4 – Oct 22 | 60–80 |
| Bleeding Hearts | Jan 29 | — | Mar 26 | — | May 14 – Jun 11 | 60–90 |
| Calendula | — | Feb 12 | Mar 12 | Aug 23 | Apr 30 – Sep 10 | 50–70 |
| California Poppy | — | — | — | Sep 6 | Nov 15 – Feb 21 | 60–90 |
| Celosia | Feb 26 | Mar 19 | Mar 19 | — | May 21 – Oct 15 | 60–90 |
| Columbine | Jan 29 | Mar 26 | Mar 26 | — | May 14 – Jun 11 | 70–100 |
| Coreopsis | Jan 29 | Mar 19 | Mar 26 | — | May 28 – Oct 22 | 60–80 |
| Cosmos | Feb 26 | Mar 12 | Mar 12 | — | May 21 – Oct 8 | 60–90 |
| Crocus | — | — | — | Oct 4 | Sep 6 – Sep 27 | 10–20 |
| Daffodils | — | — | — | Sep 27 | Sep 6 – Oct 4 | 20–40 |
| Dahlias | Mar 5 | Mar 26 | Mar 26 | — | Jun 4 – Nov 5 | 70–120 |
| Daylily | Jan 29 | — | Mar 26 | — | Jun 4 – Oct 22 | 60–90 |
| Dianthus | Jan 29 | Feb 12 | Feb 19 | — | Apr 9 – Jun 25 | 60–80 |
| Echinacea (Purple Coneflower) | Jan 29 | Mar 26 | Mar 26 | — | Jun 4 – Oct 22 | 70–90 |
| Foxglove | Jan 29 | Mar 26 | Mar 26 | — | May 14 – Jun 11 | 80–120 |
| Freesia | — | — | — | Sep 20 | Oct 18 – Nov 15 | 84–112 |
| Gaillardia (Blanket Flower) | Feb 5 | Mar 19 | Mar 19 | — | May 28 – Nov 12 | 70–100 |
| Geraniums | Jan 15 | — | Mar 19 | — | May 28 – Oct 15 | 70–100 |
| Gladiolus | — | Mar 26 | Mar 26 | — | Jun 4 – Nov 5 | 70–100 |
| Hostas | Jan 22 | — | Mar 26 | — | Jun 4 – Oct 8 | 60–90 |
| Hyacinths | — | — | — | Oct 4 | Sep 27 – Oct 18 | 14–28 |
| Hydrangeas | Jan 22 | — | Mar 26 | — | Jun 4 – Oct 8 | 90–150 |
| Impatiens | Jan 29 | — | Mar 26 | — | Jun 4 – Oct 22 | 60–75 |
| Irises | — | Division | Mar 26 | — | May 14 – Jun 18 | 60–100 |
| Larkspur | — | Feb 26 | — | Aug 23 | May 7 – Aug 13 | 60–90 |
| Lavender | Jan 22 | — | Apr 2 | — | Jun 11 – Sep 17 | 90–120 |
| Lilies | — | Division | Mar 26 | — | Jun 4 – Sep 24 | 70–120 |
| Lobelia | Jan 29 | — | Feb 19 | — | Apr 16 – Jun 11 | 70–80 |
| Lupine | Jan 29 | Mar 26 | Mar 26 | — | May 14 – Jun 11 | 75–100 |
| Marigolds | Feb 12 | Mar 19 | Mar 19 | — | May 14 – Sep 17 | 50–70 |
| Nasturtium | Feb 26 | Mar 19 | Mar 19 | — | May 14 – Oct 15 | 55–65 |
| Pansy | Jan 15 | — | Mar 12 | Aug 23 | May 7 – Aug 13 | 70–90 |
| Peonies | — | Division | Mar 26 | — | May 21 – Jun 18 | 90–120 |
| Petunia | Jan 29 | — | Mar 26 | — | Jun 4 – Oct 8 | 70–90 |
| Phlox | Jan 29 | Mar 26 | Mar 26 | — | Jun 4 – Aug 13 | 80–110 |
| Portulaca | Feb 26 | Mar 19 | Mar 19 | — | May 7 – Oct 1 | 50–70 |
| Ranunculus | — | — | — | Sep 6 | Sep 20 – Oct 25 | 90–120 |
| Roses | Jan 22 | — | Mar 26 | — | Jun 4 – Oct 22 | 90–180 |
| Salvia | Jan 29 | — | Mar 19 | — | May 28 – Oct 15 | 70–90 |
| Sedum (Stonecrop) | Jan 29 | — | Mar 26 | — | Jul 16 – Oct 8 | 60–90 |
| Snapdragon | Jan 15 | Feb 19 | Mar 12 | Aug 23 | May 21 – Sep 10 | 70–100 |
| Sunflower | Mar 5 | Mar 19 | Mar 19 | — | Jun 11 – Oct 15 | 70–100 |
| Sweet Alyssum | Feb 12 | Feb 19 | Mar 12 | Sep 6 | Apr 23 – Aug 13 | 45–60 |
| Sweet Pea | — | — | — | Aug 30 | Nov 8 – Jan 31 | 65–85 |
| Tulips | — | — | — | Oct 4 | Sep 20 – Oct 18 | 15–30 |
| Vinca (Annual) | Jan 15 | — | Mar 19 | — | May 28 – Oct 15 | 70–90 |
| Yarrow | Jan 29 | Mar 19 | Mar 26 | — | May 28 – Oct 22 | 60–90 |
| Zinnia | Feb 26 | Mar 19 | Mar 19 | — | May 28 – Oct 15 | 60–70 |
Monthly Planting Guide for Hamilton
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Hamilton.
Frequently Asked Questions
What planting zone is Hamilton, ON?
Hamilton is in USDA Hardiness Zone 8a. 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 Hamilton, ON?
Based on 30 years of NOAA weather station data, the median last spring frost in Hamilton falls around March 26. Plan transplants and direct-sow dates relative to this date.
When is the first fall frost in Hamilton, ON?
The median first fall frost in Hamilton arrives around November 1. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
Is Hamilton a good location for home gardening?
Hamilton 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.
Your Hamilton Garden Planner — Free
A 22-page printable planner built for Hamilton (Zone 8a). 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