Portsmouth City, VA — Planting Guide
Portsmouth City is in USDA Zone 8a. The average last spring frost is March 22 and the first fall frost is November 17, giving you a growing season of approximately 240 days.
At an elevation of 594 ft, Portsmouth City receives approximately 41.7 in of rainfall annually. Summer highs average 93°F with winter lows around 42°F. The predominant soil type is Silt Loam.
Based on 30 years of NOAA climate station data, the last frost date here varies by 51 days year to year — ranging from March 3 in warm years to April 23 in cold years. The growing season is trending longer by about 0.98 days per decade. Portsmouth City scores 69/100 (Good) on the Microclimate Index.
🌡️ Zone
8a (10°F to 15°F min)
❄️ Last Frost
March 22
🍂 First Frost
November 17
📅 Growing Season
240 days
⛰️ Elevation
594 ft
🌧️ Annual Rainfall
41.7 in
Monthly Watering Calendar
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 3.4 in | 10 days | — | None |
| Feb | 3 in | 7 days | 1.3 in | Moderate |
| Mar | 4.4 in | 9 days | — | Low |
| Apr | 2.8 in | 7 days | 1.5 in | Moderate |
| May | 3 in | 7 days | 1.3 in | Moderate |
| Jun | 4 in | 12 days | 0.3 in | Low |
| Jul | 4 in | 13 days | 0.3 in | Low |
| Aug | 4.4 in | 11 days | — | Low |
| Sep | 3 in | 8 days | 1.3 in | Moderate |
| Oct | 2.9 in | 7 days | 1.4 in | Moderate |
| Nov | 3 in | 8 days | 1.3 in | Moderate |
| Dec | 3.8 in | 8 days | — | None |
Annual total: 41.7 in. Gardens typically need ~1 inch of water per week during the growing season. Months marked "None" for extra water are outside the active growing season for your zone — most gardens are dormant and don't need irrigation during those months.
Portsmouth City Soil Profile
Soil Type
Silt Loam
Soil pH
5.4-7
Drainage
Well Drained
Frost Risk Probability
Based on 30 years of NOAA weather station data from 3 stations
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) | Apr 23 | Dec 3 | 224 days |
| Cautious | Apr 1 | Nov 23 | 236 days |
| Average year | Mar 22 | Nov 17 | 240 days |
| Optimistic | Mar 16 | Nov 9 | 238 days |
| Aggressive (risky) | Mar 3 | Nov 3 | 245 days |
Not very — frost dates can vary by ±51 days year-to-year. Use the "Conservative" row in the table below, and keep row covers handy for surprise late frosts.
Slightly — seasons are trending a bit longer (1 days/decade). Historical frost dates are still reliable for planning.
Gardening Difficulty Score
Portsmouth City offers good growing conditions. A little planning around frost dates goes a long way.
Local Gardening Help in Portsmouth City
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 Portsmouth City's climate and soil.
County Extension Office
Portsmouth City Virginia Cooperative Extension (Virginia Tech / Virginia State) Extension Office
Phone: 540-231-5299
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.
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 Portsmouth City
Finding local nurseries & garden centers in Portsmouth City
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Portsmouth City'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 Portsmouth City VA" or "garden center Portsmouth City" 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 Portsmouth City VA" or check your extension office and local parks department. Facebook groups like "Portsmouth City Gardeners" or "Virginia 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
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Longest Day
14.5 hours
Summer solstice daylight
Shortest Day
9.5 hours
Winter solstice daylight
Peak Sun Hours
9 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 | 9.7 hr | 4.8 hr | Short day |
| February | 10.6 hr | 5.6 hr | Short day |
| March | 11.7 hr | 6.2 hr | Short day |
| April | 13 hr | 7.5 hr | Neutral |
| May | 14 hr | 9 hr | Long day |
| June | 14.5 hr | 8.3 hr | Long day |
| July | 14.3 hr | 7.6 hr | Long day |
| August | 13.4 hr | 7.1 hr | Neutral |
| September | 12.2 hr | 6.8 hr | Neutral |
| October | 11 hr | 6.6 hr | Short day |
| November | 10 hr | 5.6 hr | Short day |
| December | 9.5 hr | 4.7 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 Apr through Nov.
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 | 44°F | 52°F | 🐢 Slow | ~24 weeks |
| Feb | 45°F | 50°F | 🐢 Slow | ~24 weeks |
| Mar | 54°F | 55°F | ♻️ Active | ~14 weeks |
| Apr | 61°F | 61°F | ♻️ Active | ~14 weeks |
| May | 71°F | 69°F | 🔥 Peak | ~8 weeks |
| Jun | 83°F | 79°F | 🔥 Peak | ~8 weeks |
| Jul | 89°F | 85°F | 🔥 Peak | ~8 weeks |
| Aug | 92°F | 87°F | 🔥 Peak | ~8 weeks |
| Sep | 85°F | 85°F | 🔥 Peak | ~8 weeks |
| Oct | 75°F | 76°F | 🔥 Peak | ~8 weeks |
| Nov | 60°F | 67°F | ♻️ Active | ~14 weeks |
| Dec | 52°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 Portsmouth City
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
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 Portsmouth City
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with county-specific planting dates.
Fall Cover Crops (7 options) — Plant after harvest to protect soil over winter
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Austrian winter peas | Sep 25 | Mar 1 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Sep 8 | Mar 8 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Oct 3 | Mar 1 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Sep 3 | Mar 1 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Oct 10 | Mar 8 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Aug 9 | Mar 8 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Aug 24 | Mar 8 | — | Erosion control, weed suppression, good biomass |
Spring Cover Crops (4 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | Apr 2 | Sep 22 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Cowpeas (southern peas) | Mar 30 | Sep 8 | ✓ Yes | Excellent nitrogen fixer for warm climates, edible |
| Sorghum-sudan grass | Mar 31 | Sep 15 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Feb 25 | Sep 8 | ✓ 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 7 | Nov 3 | — | Deep roots break compaction, attract pollinators and beneficial insects |
Wind & Microclimate
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 11 mph Summer: 9 mph
Fall: 7 mph Winter: 10 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
5.4/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Low
Relatively flat terrain (305 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
20,783 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 750 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
Mar, Jun, Jul, Aug
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Apr, Oct, Nov
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 41.7 inches of rain per year
- A 1,000 sq ft roof can collect roughly 20,783 gallons annually
- Rainwater harvesting is fully legal in your state
- Stock up on stored water before your dry season (Apr, Oct, Nov)
- Use a first-flush diverter to keep roof debris out of your collection
Soil & Growing Conditions in Portsmouth City
Soil Type
Silt Loam
Soil pH 5.4–7 · Well Drained drainage
Native soil is well-suited to most vegetables and herbs with regular compost additions.
Watering Needs
Drought stress: 3.5/10
Low-to-moderate drought stress. Plan to water 1–2 times per week during peak summer. (41.7 in. annual rainfall)
Season Tips
240-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.
Recommended for Your Garden
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Get instant, accurate soil pH readings to fine-tune your amendments.
Boost soil fertility and structure with rich, well-aged organic compost.
🥬 Vegetables to Grow in Portsmouth City
115 vegetables that grow well in Zone 8a with planting dates for Portsmouth City.
Show all 115 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | Feb 22 | Mar 29 | Apr 5 | Jun 28 – Aug 2 | 80–100 |
| Amaranth | Feb 1 | Mar 29 | Apr 5 | Jul 5 – Aug 23 | 90–120 |
| Artichoke | — | — | Apr 5 | Aug 9 – Oct 18 | 120–180 |
| Arugula | Feb 15 | Mar 8 | Mar 22 | Apr 26 – Jun 28 | 30–50 |
| Asparagus | — | — | Apr 5 | — | 730–1095 |
| Beets | — | Mar 8 | — | May 3 – May 31 | 50–70 |
| Belgian Endive | Feb 15 | Mar 8 | Mar 22 | Jul 12 – Sep 6 | 110–150 |
| Bitter Melon | Feb 1 | Mar 29 | Apr 5 | Jun 7 – Jul 19 | 60–90 |
| Black Beans | — | Mar 29 | — | Jun 28 – Aug 16 | 90–120 |
| Bok Choy | Feb 15 | Mar 8 | Mar 22 | May 3 – Jun 7 | 40–60 |
| Broccoli | Feb 15 | Mar 8 | Mar 22 | May 24 – Jul 5 | 60–90 |
| Broccoli Rabe | Feb 15 | Mar 8 | Mar 22 | May 3 – Jun 7 | 40–60 |
| Brussels Sprouts | Feb 15 | Mar 8 | Mar 22 | Jun 21 – Aug 16 | 90–130 |
| Butternut Squash | Feb 22 | Mar 29 | Apr 5 | Jul 5 – Aug 9 | 85–110 |
| Cabbage | Feb 15 | Mar 8 | Mar 22 | May 24 – Jul 19 | 60–100 |
| Calabash | Feb 1 | Mar 29 | Apr 5 | Jun 28 – Aug 23 | 80–120 |
| Cardoon | — | — | Apr 5 | Aug 9 – Sep 20 | 120–150 |
| Carrots | — | Mar 8 | — | May 10 – Jun 14 | 60–80 |
| Cauliflower | Feb 15 | Mar 8 | Mar 22 | May 17 – Jul 19 | 55–100 |
| Celeriac | Feb 15 | Mar 8 | Mar 22 | Jul 5 – Aug 9 | 100–120 |
| Celery | Feb 15 | Mar 8 | Mar 22 | Jun 14 – Aug 9 | 80–120 |
| Celtuce | Feb 15 | Mar 8 | Mar 22 | May 24 – Jul 5 | 60–90 |
| Chard | Feb 15 | Mar 8 | Mar 22 | May 17 – Jul 5 | 50–60 |
| Chayote | Feb 1 | Mar 29 | Apr 5 | Aug 9 – Oct 18 | 120–180 |
| Chickpeas | Feb 15 | Mar 8 | Mar 22 | Jun 14 – Jul 26 | 80–110 |
| Chicory | Feb 15 | Mar 8 | Mar 22 | May 24 – Jul 5 | 60–85 |
| Chinese Cabbage | Feb 15 | Mar 8 | Mar 22 | May 17 – Jun 14 | 50–70 |
| Christmas Lima Beans | Feb 1 | Mar 29 | Apr 5 | Jun 28 – Aug 2 | 80–100 |
| Collard Greens | Feb 15 | Mar 8 | Mar 22 | May 17 – Jul 19 | 55–75 |
| Corn | — | Mar 29 | — | May 31 – Jul 26 | 60–100 |
| Cowpeas | — | Mar 29 | — | May 31 – Jul 12 | 60–90 |
| Cress | Feb 15 | Mar 8 | Mar 22 | Apr 5 – Apr 26 | 14–21 |
| Crookneck Squash | Feb 22 | Mar 29 | Apr 5 | May 24 – Jun 21 | 45–60 |
| Crosne | — | Mar 8 | — | Aug 9 – Oct 11 | 150–200 |
| Cucumber | Feb 22 | Mar 29 | Apr 5 | May 31 – Jul 26 | 50–70 |
| Daikon | — | Mar 8 | — | May 3 – May 31 | 50–70 |
| Delicata Squash | Feb 22 | Mar 29 | Apr 5 | Jun 28 – Aug 2 | 80–100 |
| Edamame | — | Mar 29 | — | Jun 14 – Jul 26 | 75–100 |
| Eggplant | Jan 18 | Mar 29 | Apr 5 | Jun 14 – Aug 16 | 65–85 |
| Endive | Feb 15 | Mar 8 | Mar 22 | May 10 – Jun 14 | 45–65 |
| Escarole | Feb 15 | Mar 8 | Mar 22 | May 17 – Jun 14 | 50–70 |
| Fava Beans | Feb 15 | Mar 8 | Mar 22 | Jun 7 – Jul 19 | 75–100 |
| Fennel | Feb 1 | Mar 29 | Apr 5 | Jun 7 – Jul 19 | 60–90 |
| Garlic | — | — | — | — | 90–240 |
| Ginger | Feb 1 | Mar 29 | Apr 5 | Dec 6 – Dec 20 | 240–300 |
| Green Beans | — | Mar 29 | — | May 24 – Jul 19 | 50–65 |
| Horseradish | — | — | Apr 5 | Aug 9 – Oct 18 | 120–180 |
| Hot Peppers | Jan 18 | Mar 29 | Apr 5 | Jun 14 – Sep 20 | 70–120 |
| Hubbard Squash | Feb 22 | Mar 29 | Apr 5 | Jul 19 – Aug 23 | 100–120 |
| Jicama | Feb 1 | Mar 29 | Apr 5 | Aug 9 – Oct 18 | 120–180 |
| Kabocha | Feb 22 | Mar 29 | Apr 5 | Jul 5 – Aug 2 | 85–100 |
| Kai Lan | Feb 15 | Mar 8 | Mar 22 | May 10 – Jun 7 | 45–60 |
| Kale | Feb 15 | Mar 8 | Mar 22 | May 17 – Jul 12 | 50–70 |
| Kidney Beans | — | Mar 29 | — | Jun 28 – Aug 2 | 85–110 |
| Kohlrabi | Feb 15 | Mar 8 | Mar 22 | May 10 – Jun 14 | 45–65 |
| Komatsuna | Feb 15 | Mar 8 | Mar 22 | Apr 26 – May 31 | 35–50 |
| Leeks | Feb 15 | Mar 8 | Mar 22 | Jun 21 – Sep 6 | 90–150 |
| Lentils | Feb 15 | Mar 8 | Mar 22 | Jun 14 – Jul 26 | 80–110 |
| Lettuce | Feb 15 | Mar 8 | Mar 22 | Apr 26 – Jul 5 | 30–60 |
| Lima Beans | — | Mar 29 | — | May 31 – Jul 12 | 60–90 |
| Loofah | Feb 1 | Mar 29 | Apr 5 | Jul 19 – Sep 20 | 100–150 |
| Luffa | Feb 1 | Mar 29 | Apr 5 | Jul 5 – Sep 20 | 90–150 |
| Mache | Feb 15 | Mar 8 | Mar 22 | May 3 – Jun 7 | 40–60 |
| Malabar Spinach | Feb 1 | Mar 29 | Apr 5 | May 31 – Jun 28 | 55–70 |
| Melon | Feb 22 | Mar 29 | Apr 5 | Jun 14 – Aug 2 | 70–100 |
| Microgreens | Feb 15 | Mar 8 | Mar 22 | Mar 29 – Apr 26 | 7–21 |
| Mitsuba | Feb 15 | Mar 8 | Mar 15 | May 10 – Jul 5 | 50–70 |
| Mizuna | Feb 15 | Mar 8 | Mar 22 | Apr 26 – May 24 | 30–45 |
| Mustard Greens | Feb 15 | Mar 8 | Mar 22 | Apr 26 – Jun 28 | 30–50 |
| Napa Cabbage | Feb 15 | Mar 8 | Mar 22 | May 17 – Jun 21 | 55–75 |
| New Zealand Spinach | Feb 1 | Mar 29 | Apr 5 | May 31 – Jun 28 | 55–70 |
| Okra | Feb 1 | Mar 29 | Apr 5 | May 31 – Jul 26 | 50–65 |
| Onion | Feb 15 | Mar 8 | Mar 22 | Jun 21 – Aug 9 | 90–120 |
| Pac Choi | Feb 15 | Mar 8 | Mar 22 | May 3 – May 31 | 40–55 |
| Parsnip | — | Mar 8 | — | Jun 21 – Aug 2 | 100–130 |
| Patty Pan Squash | Feb 22 | Mar 29 | Apr 5 | May 24 – Jun 21 | 45–60 |
| Peas | Feb 15 | Mar 8 | Mar 22 | May 17 – Jul 12 | 55–70 |
| Peppers | Jan 18 | Mar 29 | Apr 5 | Jun 7 – Aug 16 | 60–90 |
| Pole Beans | Feb 1 | Mar 29 | Apr 5 | May 31 – Jul 26 | 55–70 |
| Potatoes | Feb 1 | Mar 29 | Apr 5 | Jun 14 – Aug 23 | 70–120 |
| Pumpkin | Feb 22 | Mar 29 | Apr 5 | Jul 5 – Aug 23 | 85–120 |
| Purslane | Feb 15 | Mar 8 | Mar 22 | May 3 – Jun 7 | 40–60 |
| Radicchio | Feb 15 | Mar 8 | Mar 22 | May 24 – Jun 28 | 60–80 |
| Radish | — | Mar 8 | — | Apr 5 – Apr 26 | 22–35 |
| Rhubarb | — | — | Apr 12 | — | 365–730 |
| Romanesco | Feb 15 | Mar 8 | Mar 22 | Jun 7 – Jul 19 | 75–100 |
| Rutabaga | — | Mar 8 | — | May 31 – Jul 5 | 80–100 |
| Salsify | — | Mar 8 | — | Jun 21 – Aug 2 | 100–130 |
| Savoy Cabbage | Feb 15 | Mar 8 | Mar 22 | May 31 – Jul 26 | 70–110 |
| Scallions | Feb 15 | Mar 8 | Mar 22 | May 17 – Jun 14 | 50–70 |
| Scarlet Runner Beans | Feb 1 | Mar 29 | Apr 5 | Jun 7 – Jul 12 | 60–80 |
| Shallot | Feb 15 | Mar 8 | Mar 22 | Jun 21 – Aug 9 | 90–120 |
| Shiso | Feb 1 | Mar 29 | Apr 5 | May 31 – Jul 26 | 50–70 |
| Snap Peas | Feb 1 | Mar 29 | Apr 5 | May 31 – Jul 26 | 55–70 |
| Snow Peas | Feb 15 | Mar 8 | Mar 22 | May 17 – Jul 12 | 50–65 |
| Soybeans | — | Mar 29 | — | Jun 21 – Aug 16 | 80–120 |
| Spaghetti Squash | Feb 22 | Mar 29 | Apr 5 | Jul 5 – Aug 2 | 85–100 |
| Spinach | Feb 15 | Mar 8 | Mar 22 | Apr 26 – Jun 28 | 35–50 |
| Squash (Summer) | Feb 22 | Mar 29 | Apr 5 | May 24 – Jul 26 | 45–65 |
| Squash (Winter) | Feb 22 | Mar 29 | Apr 5 | Jun 28 – Aug 23 | 80–120 |
| Sunchoke | — | — | Apr 5 | Jul 26 – Sep 20 | 110–150 |
| Sunflower | Feb 1 | Mar 29 | Apr 5 | Jun 14 – Aug 2 | 70–100 |
| Sweet Corn | — | Mar 29 | — | May 31 – Jul 12 | 60–90 |
| Sweet Potatoes | Feb 1 | Mar 29 | Apr 5 | Jul 5 – Aug 23 | 90–120 |
| Tatsoi | Feb 15 | Mar 8 | Mar 22 | Apr 26 – May 31 | 35–50 |
| Tomatillo | Feb 1 | Mar 29 | Apr 5 | Jun 7 – Aug 16 | 60–85 |
| Tomatoes | Feb 1 | Mar 29 | Apr 5 | Jun 7 – Aug 16 | 60–85 |
| Turmeric | Feb 1 | Mar 29 | Apr 5 | Dec 6 – Dec 20 | 240–300 |
| Turnip | — | Mar 8 | — | Apr 19 – May 24 | 40–60 |
| Watercress | Feb 15 | Mar 8 | Mar 22 | May 3 – Jun 7 | 40–60 |
| Watermelon | Feb 22 | Mar 29 | Apr 5 | Jun 14 – Aug 2 | 70–100 |
| Wax Beans | — | Mar 29 | — | May 24 – Jul 19 | 50–65 |
| Winter Melon | Feb 1 | Mar 29 | Apr 5 | Jul 5 – Aug 23 | 90–120 |
| Yard Long Beans | Feb 1 | Mar 29 | Apr 5 | May 31 – Jul 12 | 55–80 |
| Zucchini | Feb 22 | Mar 29 | Apr 5 | May 24 – Jul 19 | 45–60 |
🍓 Fruits to Grow in Portsmouth City
27 fruits that grow well in Zone 8a with planting dates for Portsmouth City.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Apr 12 | Jul 12 – Oct 25 | 90–180 |
| Aronia | — | — | Apr 12 | — | 730–1095 |
| Blackberries | — | — | Apr 12 | — | 365–730 |
| Blueberries | — | — | Apr 12 | — | 730–1095 |
| Boysenberries | — | — | Apr 12 | — | 365–730 |
| Cantaloupe | — | — | Apr 12 | Jun 21 – Jul 26 | 70–90 |
| Che Fruit | — | — | Apr 12 | — | 1095–1825 |
| Elderberries | — | — | Apr 12 | — | 730–1095 |
| Figs | — | — | Apr 12 | — | 730–1825 |
| Goji Berries | — | — | Apr 12 | — | 730–1095 |
| Gooseberries | — | — | Apr 12 | — | 730–1095 |
| Grapes | — | — | Apr 12 | — | 730–1095 |
| Ground Cherry | — | — | Apr 12 | Jun 21 – Aug 16 | 65–80 |
| Hardy Kiwi | — | — | Apr 12 | — | 1095–1825 |
| Honeydew | — | — | Apr 12 | Jul 5 – Aug 16 | 80–110 |
| Jostaberry | — | — | Apr 12 | — | 730–1095 |
| Kiwi | — | — | Apr 12 | — | 1095–1825 |
| Loquat | — | — | Apr 12 | — | 730–1825 |
| Medlar | — | — | Apr 12 | — | 1095–1825 |
| Mulberries | — | — | Apr 12 | — | 730–1825 |
| Pawpaw | — | — | Apr 12 | — | 1095–2555 |
| Persimmon | — | — | Apr 12 | — | 1095–2555 |
| Pomegranate | — | — | Apr 12 | — | 730–1095 |
| Quince | — | — | Apr 12 | — | 1095–1825 |
| Raspberries | — | — | Apr 12 | — | 365–730 |
| Serviceberries | — | — | Apr 12 | — | 730–1095 |
| Strawberries | — | — | Apr 12 | Jul 12 – Dec 27 | 90–365 |
🌿 Herbs to Grow in Portsmouth City
42 herbs that grow well in Zone 8a with planting dates for Portsmouth City.
Show all 42 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Angelica | Feb 15 | Mar 8 | Mar 15 | — | 365–730 |
| Anise | Feb 15 | Mar 8 | Mar 15 | Jun 14 – Aug 30 | 90–120 |
| Basil | Feb 1 | Mar 29 | Apr 5 | May 31 – Aug 2 | 50–75 |
| Bee Balm | — | — | Mar 29 | Jun 28 – Sep 13 | 90–120 |
| Borage | Feb 15 | Mar 8 | Mar 15 | May 10 – Jun 28 | 50–60 |
| Caraway | Feb 15 | Mar 8 | Mar 15 | — | 365–450 |
| Catnip | — | — | Mar 29 | May 31 – Aug 2 | 60–80 |
| Chamomile | Feb 15 | Mar 8 | Mar 15 | May 17 – Jul 26 | 60–90 |
| Chervil | Feb 15 | Mar 8 | Mar 15 | Apr 26 – Jun 28 | 40–60 |
| Chives | — | — | Mar 29 | May 31 – Aug 9 | 60–90 |
| Cilantro | Feb 15 | Mar 8 | Mar 15 | Apr 26 – Jun 28 | 40–60 |
| Comfrey | — | — | Mar 29 | May 31 – Aug 9 | 60–90 |
| Cumin | Feb 15 | Mar 8 | Mar 15 | Jun 28 – Aug 30 | 100–120 |
| Dill | Feb 15 | Mar 8 | Mar 15 | Apr 26 – Jun 28 | 40–60 |
| Echinacea | — | — | Mar 29 | Aug 2 – Nov 8 | 120–180 |
| Epazote | Feb 1 | Mar 29 | Apr 5 | May 24 – Jul 19 | 45–60 |
| Fennel (herb) | Feb 15 | Mar 8 | Mar 15 | May 17 – Jul 26 | 60–90 |
| Feverfew | — | — | Mar 29 | Jun 28 – Sep 13 | 90–120 |
| Garlic Chives | — | — | Mar 29 | May 31 – Aug 9 | 60–90 |
| Horehound | — | — | Mar 29 | Jun 14 – Aug 9 | 75–90 |
| Hyssop | — | — | Mar 29 | Jun 7 – Aug 9 | 70–90 |
| Lavender | — | — | Mar 29 | Jun 28 – Nov 29 | 90–200 |
| Lemon Balm | — | — | Mar 29 | May 31 – Jul 19 | 60–70 |
| Lemon Thyme | — | — | Mar 29 | Jun 7 – Aug 9 | 70–90 |
| Lemon Verbena | Feb 1 | Mar 29 | Apr 5 | Jun 7 – Aug 16 | 60–90 |
| Lemongrass | Feb 1 | Mar 29 | Apr 5 | Jun 21 – Sep 20 | 75–120 |
| Lovage | — | — | Mar 29 | Jun 7 – Aug 9 | 70–90 |
| Marjoram | — | — | Mar 29 | May 31 – Aug 9 | 60–90 |
| Mint | — | — | Mar 29 | May 31 – Aug 9 | 60–90 |
| Oregano | — | — | Mar 29 | May 31 – Aug 9 | 60–90 |
| Parsley | Feb 15 | Mar 8 | Mar 15 | May 17 – Jul 19 | 60–80 |
| Rosemary | — | — | Mar 29 | Jun 21 – Nov 8 | 80–180 |
| Rue | — | — | Mar 29 | Jun 7 – Aug 9 | 70–90 |
| Sage | — | — | Mar 29 | Jun 14 – Aug 9 | 75–90 |
| Savory | — | — | Mar 29 | May 24 – Jul 19 | 50–70 |
| Sorrel | Feb 15 | Mar 8 | Mar 15 | Apr 26 – Jun 28 | 40–60 |
| Stevia | Feb 1 | Mar 29 | Apr 5 | Jun 7 – Aug 16 | 60–90 |
| Tarragon | — | — | Mar 29 | May 31 – Aug 9 | 60–90 |
| Thai Basil | Feb 1 | Mar 29 | Apr 5 | May 31 – Aug 2 | 50–75 |
| Thyme | — | — | Mar 29 | Jun 7 – Aug 9 | 70–90 |
| Valerian | — | — | Mar 29 | Aug 2 – Nov 8 | 120–180 |
| Yarrow | — | — | Mar 29 | Jun 28 – Sep 13 | 90–120 |
Monthly Planting Guide for Portsmouth City
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Portsmouth City.
Frequently Asked Questions
What planting zone is Portsmouth City, VA?
Portsmouth City 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 Portsmouth City, VA?
Based on 30 years of NOAA weather station data, the median last spring frost in Portsmouth City falls around March 22. In 8 out of 10 years, last frost lands between March 3 and April 23 — a 51-day window of variability. Use April 23 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Portsmouth City, VA?
The median first fall frost in Portsmouth City arrives around November 17. In cold years it can arrive as early as November 3; in mild years as late as December 3. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Portsmouth City?
Portsmouth City has a frost-free growing season of approximately 240 days. This long season supports multiple succession plantings and warm-season crops that need extended heat, like sweet potatoes and melons. Climate records show the growing season is trending longer by about 0.98 days per decade.
What is the soil like in Portsmouth City for gardening?
Portsmouth City has predominantly Silt Loam soil with a pH range of 5.4–7 and Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Portsmouth City?
Portsmouth City has commercial agriculture that includes Poultry, Corn, Soybeans, Hay, Wheat. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Portsmouth City a good location for home gardening?
Portsmouth City scores 69/100 (Good) on our Microclimate Index, which combines frost reliability, drought pressure, soil challenge, elevation risk, and long-term climate trend. Conditions here are moderate — most common crops grow well with standard timing and care.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Portsmouth City gardeners in Zone 8a 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.
