What to plant this week in Trenton, NJ
With the average last frost date of April 3 firmly in your rearview mirror, Trenton gardeners are ready to push forward this week. While air temperatures hover near zero at night, the soil has warmed enough for a major round of direct sowing and transplanting across the Capital Region.
The next 7 days
Trenton, NJGrowing in Trenton right now
- Exploit the extended daylight hours typical of late spring/early summer in Mercer County by staking tall crops like Sunflowers and Sweet Corn before they get windy.
- Trenton's clay-heavy soils often stay cool; focus your immediate planting efforts on warm-weather staples from our list like Basil, Borage, and Okra rather than waiting for the soil to fully heat up.
- Take advantage of the current harvest window immediately by pulling early Bush Beans and harvesting Cucumber and Yellow Summer Squash before peak summer heat stresses the plants.
- Monitor moisture carefully as this week's rainfall patterns can be erratic; ensure consistent watering for young Vinca and Shiso transplants to prevent shock.
Sow this week
No direct sowing windows open this week.
Transplant this week
Nothing is due to go out this week.
Harvest soon
37 crops- Basil
- Borage
- Bush Bean
- Cantaloupe
- Cleome (Spider Flower)
- Cosmos
- Cowpea (Black-Eyed Pea)
- Cucumber
- Edamame
- Fennel
- Flour Corn
- French Marigold
- Garden Verbena
- Garlic
- Gourd (Ornamental/Bottle)
- Honeydew Melon
- Lima Bean
- Loofah (Luffa)
- Malabar Spinach
- Nasturtium
- Okra
- Pole Bean
- Pumpkin
- Roselle (Cranberry Hibiscus)
- Scarlet Runner Bean
- Shiso (Japanese Basil)
- Summer Savory
- Sunflower
- Sweet Corn
- Sweet Potato
- Thai Basil
- Vinca (Madagascar Periwinkle)
- Watermelon
- Winter Squash
- Yellow Summer Squash
- Zinnia
- Zucchini
Seasonal tips
- Thin out overcrowded seedlings to give remaining plants room for air circulation and sun.
- Apply a light layer of straw mulch around warm-weather crops to retain soil moisture during heat waves.
- Practice succession sowing with fast-maturing beans or radishes every two weeks to extend your harvest window.
Pest & disease watch
- Spider Mites are beginning to emerge on Fennel, Cleome (Spider Flower), and Zinnia as humidity fluctuates in the Trenton valley.
- Watch for early aphid colonies forming on newly transplanted Garden Verbena and French Marigolds before they spread to neighbors.
- Slugs remain active in damp microclimates near the Delaware River, targeting young Edamame and Malabar Spinach seedlings at night.
Watering this week
Water deeply at the base of plants in the early morning to reduce evaporation and prevent fungal diseases on wet foliage.
Harvest basil leaves regularly by pinching off stems just above a leaf pair to encourage bushier growth rather than flowering.
Trenton gardening questions
3Can I plant my Zucchini and Summer Squash now given the frost dates?
Yes, you can safely transplant all varieties of squash listed for this week since Trenton's risk of a late freeze has passed after April 3. Ensure you water them deeply after planting to help them establish roots in the local clay soil.
Are there any cool-weather crops left to start directly outside?
No new sowings are recommended for this week as our list shows no 'sow_now' items, indicating it is past time for those plants. Instead, focus on harvesting your Garlic or replanting it if you missed the window earlier in the season.
How should I manage my Watermelon and Cantaloupe during this transition?
These melons are ready to be harvested soon if they show signs of maturity, but do not rush them as fruit quality peaks after the first major heat wave. Keep an eye out for Birds and squirrels which will target your ripening Honeydew Melon and Gourd plants.
Other cities in zone 7a
12See the full zone 7a guide → · Plan your Trenton garden in SproutGuide →