April Gardening Guide: What to Plant This Month in San Joaquin County
April is one of the most exciting months for gardeners in San Joaquin County. With mild temperatures, longer days, and just enough spring rain, the Central Valley’s rich soil is ready for planting. Whether you’re starting a raised bed in your backyard, prepping rows on your small farm, or growing herbs on an apartment balcony, April is the time to dig in.
Here’s your local guide for what to plant this month—and how to get the most out of your garden.
What to Plant in April
San Joaquin County sits in USDA Hardiness Zones 9b–10a, meaning we can grow a wide range of fruits, vegetables, and flowers almost year-round. April is the perfect transition month from cool-season crops to warm-season favorites.
Vegetables:
- Tomatoes (start transplants now)
- Peppers
- Squash (zucchini, yellow, pattypan)
- Cucumbers
- Corn
- Green beans
- Eggplant
- Lettuce & spinach (still okay in early April)
- Carrots & beets
🧑🌾 Tip: Direct sow beans, corn, and squash after the last frost—usually mid-March in San Joaquin County. Transplant tomatoes and peppers once nighttime temps stay above 50°F.
Herbs:
- Basil
- Cilantro
- Dill
- Oregano
- Thyme
- Mint (best in containers—it spreads quickly!)
Flowers:
- Marigolds (natural pest control!)
- Zinnias
- Sunflowers
- Cosmos
- Petunias
Gardening Tips for San Joaquin County
1. Watch Your Watering
With water conservation still top of mind across California, use drip irrigation or water early in the morning to reduce evaporation. Mulching helps retain moisture and keeps weeds down.
2. Amend Your Soil
Central Valley soil is nutrient-rich but can be compacted. Mix in compost or aged manure before planting for better drainage and plant health.
Where to find compost locally:
- San Joaquin County Household Hazardous Waste Facility sometimes offers free compost.
- Visit a local nursery like Westurf Nursery in Modesto or Delta Tree Farm in Lodi for soil and mulch.
3. Keep an Eye Out for Pests
Aphids, snails, and whiteflies become active in April. Spray with neem oil or use companion planting (like marigolds and basil) to deter them naturally.
4. Get the Kids Involved
Gardening is a fun, hands-on activity for kids of all ages. Let them plant seeds, water plants, or start a mini herb garden of their own.
Local Garden Resources & Events
- UC Master Gardeners of San Joaquin County – They offer free advice and seasonal workshops
- San Joaquin County Ag Extension Office – Great for small farmers and serious gardeners
- Local garden centers like Green’s Nutrition & Garden Center (Stockton) or Orchard Nursery (Escalon) have knowledgeable staff and fresh seedlings
Gardening is a great way to connect with the land, reduce grocery bills, and get outside to enjoy San Joaquin’s spring sunshine. Whether you’re planting a few pots or an entire plot, April is the time to grow something great. 🌱🌞
