When to Plant Vegetables in Rhode Island
Cold Climate (Zones 3-5)Zones 5b
Rhode Island gardeners work within a compact growing season shaped by cold winters and late spring frosts. Success here means choosing short-season varieties, starting seeds indoors early, and using season-extension techniques like cold frames and row covers. Cool-season crops like lettuce, peas, and kale thrive in the cool spring and fall temperatures, while warm-season favorites like tomatoes and peppers need every frost-free day you can give them.
What to Plant This Month in Rhode Island (May)
Direct Sow
- bean
- corn
- zucchini
- cucumber
- radish
- beet
Transplant Outdoors
- tomato
- pepper
- eggplant
- basil
Harvest
- radish
- spinach
- lettuce
May Garden Tasks
- • Transplant warm-season crops after last frost (May 15-30 for most zone 3-5 areas)
- • Use wall-of-water protectors around tomatoes if planting before Memorial Day
- • Direct sow beans, corn, squash, and cucumbers after soil reaches 60°F
- • Succession plant lettuce and radish every 2 weeks
- • Mulch around transplants to retain moisture and suppress weeds
- • Monitor for cutworms around new transplants
Top Vegetables for Rhode Island
Lettuce
leafyeasy45-80 days
Yield: 1/2-1 lb per plant
Spinach
leafyeasy37-50 days
Yield: 1/4-1/2 lb per plant
Pea
legumeeasy60-70 days
Yield: 1/4-1/2 lb per plant
Radish
rooteasy22-30 days
Yield: 1 radish per plant
Carrot
rootmoderate70-80 days
Yield: 1 lb per foot of row
Kale
brassicaeasy55-75 days
Yield: 1-2 lbs per plant per season
Rhode Island Cities
Frequently Asked Questions
- When should I start planting vegetables in Rhode Island?
- In Rhode Island, start warm-season crops like tomatoes and peppers indoors 6–8 weeks before your last frost date, which is typically mid-May. Direct-sow cool-season crops like lettuce, peas, and radishes as soon as the soil can be worked in early spring, usually late March to mid-April. Use row covers or cold frames to extend the season on both ends.
- What are the best vegetables to grow in Rhode Island?
- Based on Rhode Island’s Cold Climate (Zones 3-5) conditions, the best vegetables include Lettuce, Spinach, Pea, Radish. These varieties are well-suited to the growing season length and temperature patterns found across Rhode Island’s USDA zones (5b). Choose short-season varieties if you are in a colder part of the state and long-season varieties in warmer areas.
- What USDA hardiness zones are in Rhode Island?
- Rhode Island spans USDA hardiness zones 5b. Your zone determines your average last spring frost date and first fall frost date, which together define your growing season length. Use our city guides below for zone-specific planting calendars tailored to your exact location.
- What vegetables can I plant in Rhode Island right now?
- In May, Rhode Island gardeners can direct-sow bean, corn, zucchini, cucumber, radish, beet. Transplant tomato, pepper, eggplant, basil outdoors. Check your specific city guide for exact timing based on your local frost dates.
- What are common vegetable gardening mistakes in Rhode Island?
- Planting warm-season crops too early before soil warms to 60°F: Wait until 2 weeks after last frost for tomatoes, peppers, and squash. Use a soil thermometer to confirm temperature at 4 inches deep. Not hardening off transplants before setting them outside: Gradually expose indoor-started seedlings to outdoor conditions over 7-10 days before transplanting, increasing time outside each day. Ignoring fall planting opportunities for cool-season crops: Count back from your first fall frost date to determine the last date to plant quick-maturing crops like lettuce, spinach, and radish for a fall harvest.