Planting an Early Summer Vegetable Garden in Maine
With cool springs and a relatively short growing season, timing is everything when it comes to gardening in Maine. Early summer (typically late May through mid-June) is a prime window for getting heat-loving vegetables into the ground and setting the stage for a productive season.
Why Early Summer Matters in Maine
By early June, most of Maine has passed its last frost date, and the soil has finally warmed enough to support germination and healthy root development. For many warm-season crops, this is the first true opportunity to thrive in the state's climate. Whether you're gardening along the coast or in the cooler foothills, this is go-time for summer vegetables.
What to Plant in Early Summer
Here's what grows well when planted in early summer in Maine:
1. Tomatoes
Start with hardened-off transplants rather than seeds, as Maine's season is too short for most tomato varieties to mature from seed in-ground. Choose early-maturing varieties and plant in full sun. Use black plastic mulch or fabric to warm the soil and speed growth.
2. Peppers
Peppers are slow growers and sensitive to cold soil, so transplant once nighttime temps reliably stay above 55°F. Bell, banana, and jalapeno varieties all do well in raised beds or containers in southern and central Maine.
3. Cucumbers
Sow seeds directly into warm soil or transplant starts. Trellis vining types to save space and improve air circulation - especially helpful in Maine's often humid summers.
These prolific producers love Maine's early summer sun and can be direct-seeded now. Give them room to spread and keep an eye out for squash bugs and powdery mildew later in the season.
Beans are perfect for direct seeding in June once the soil is at least 60°F. They grow quickly and don't require much maintenance beyond regular watering.
6. Corn
Sweet corn can go in the ground now in blocks of short rows to ensure good pollination.
7. Basil and Tender Herbs
Once the soil is warm, basil takes off. Pair it with your tomatoes for easy companion planting. Dill, parsley, and cilantro can also be planted now, either in garden beds or containers.
Tips for Maine Gardeners
- Warm the Soil: Maine soil stays cool longer, so using raised beds, black mulch, or row covers early in the season can help jumpstart growth.
- Choose Early Varieties: Look for seed packets or plant tags that say "early" or list shorter days to maturity.
- Protect Against Cold Snaps: Keep floating row covers handy in case of an unexpected cold night, especially in northern or inland areas.
- Fertilize Wisely: Maine soil is often acidic and low in organic matter. A soil test can help you amend appropriately for strong yields.
Succession Planting in Maine
Because the growing season is short, it's smart to stagger plantings of fast crops like lettuce, radishes, and bush beans every couple of weeks through early July. This keeps your harvest going and makes the most of the summer window.
Maine's early summer season may be brief, but it's full of potential. With careful planning and region-appropriate choices, your garden can deliver a rich harvest from mid-summer through the first fall frost. So sharpen your tools, check the forecast, and get growing!