What to plant this week in Oakland, CA
Oakland's mild 10a climate means frost is a distant memory, allowing you to aggressively sow warm-season crops like watermelon and sweet corn as the air holds its signature Bay Area chill. With temperatures rarely dipping below freezing even in winter, your focus this week shifts entirely to managing humidity-driven pests and maximizing yields before the eventual late-summer slowdown.
The next 7 days
Oakland, CAGrowing in Oakland right now
- Utilize Oakland's red clay soil by mixing in generous amounts of compost or aged bark mulch to improve drainage for heavy feeders like pumpkins.
- Take advantage of frequent fog events ('June Gloom') which can slow fungal growth, but ensure morning sun hits your zucchini and squash beds to prevent rotting fruit on the vine.
- Plant tall crops like corn and sunflowers on the north side of taller trees or structures in East Oakland to avoid afternoon shade that reduces pollination.
- Monitor soil moisture closely during dry spells common in May-June; the lack of winter rain means your summer garden relies entirely on irrigation now.
Sow this week
33 crops- Basil
- Borage
- Bush Bean
- Cantaloupe
- Cleome (Spider Flower)
- Cosmos
- Cowpea (Black-Eyed Pea)
- Cucumber
- Edamame
- Fennel
- Flour Corn
- French Marigold
- Garden Verbena
- Gourd (Ornamental/Bottle)
- Honeydew Melon
- Lima Bean
- Malabar Spinach
- Nasturtium
- Okra
- Pole Bean
- Pumpkin
- Scarlet Runner Bean
- Shiso (Japanese Basil)
- Summer Savory
- Sunflower
- Sweet Corn
- Thai Basil
- Vinca (Madagascar Periwinkle)
- Watermelon
- Winter Squash
- Yellow Summer Squash
- Zinnia
- Zucchini
Transplant this week
Nothing is due to go out this week.
Harvest soon
35 crops- Basil
- Borage
- Bush Bean
- Cantaloupe
- Cleome (Spider Flower)
- Cosmos
- Cowpea (Black-Eyed Pea)
- Cucumber
- Edamame
- Fennel
- Flour Corn
- French Marigold
- Garden Verbena
- 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
- Thai Basil
- Vinca (Madagascar Periwinkle)
- Watermelon
- Winter Squash
- Yellow Summer Squash
- Zinnia
- Zucchini
Seasonal tips
- Succession sow bush beans and pole beans every two weeks to ensure a steady harvest throughout the growing season.
- Pinch back the tips of basil and summer savory regularly to encourage bushier growth and prevent flowering.
- Apply a light layer of mulch around newly transplanted squash and pumpkins to retain moisture as soil warms up.
Pest & disease watch
- Aphids and whiteflies are rapidly colonizing the new growth of basil, nasturtium, and okra as humidity rises from recent rains.
- Spider mites are becoming an issue on leafy greens and beans in warmer microclimates near downtown canyons where airflow is restricted.
- Slugs thrive in Oakland's damp evenings, targeting young bean seedlings and tender leaves of Malabar spinach.
Watering this week
Water deeply at the base of plants every 2-3 days during this hot season to keep roots cool and productive.
Harvest young zucchini fruits daily when they are small to signal the plant to continue producing more fruit.
Oakland gardening questions
3Can I plant tomatoes or peppers now in Oakland despite being USDA 10a?
While the zone allows it, tomato and pepper seedlings are not currently listed for sowing or transplanting this week. Wait until later spring when heat accumulates to ensure robust growth rather than shock.
My zucchini plants have yellow spots; is this normal for Oakland gardens?
Yellow spotting often indicates early fruit rot caused by moisture sitting on the vines, a common issue in our clay-heavy soils. Lift the fruits off the ground and space them out to improve airflow and drainage immediately.
When should I start harvesting my first sweet corn in this area?
Since you sowed sweet corn recently, look for silks that have turned brown and begin checking ears about 21 days after pollination. Harvest promptly as the sugar content drops quickly once the husk dries.
Other cities in zone 10a
6See the full zone 10a guide → · Plan your Oakland garden in SproutGuide →