When to Plant in Silver Spring, MD

Silver Spring, Maryland, has a growing season marked by a median last spring frost on April 16 and a first fall frost on October 22, providing about 200 frost-free days each year. This climate allows gardeners to cultivate a diverse range of crops, making the most of the warm summer months while preparing for the chill that comes with autumn.

The humid temperate microclimate in Silver Spring, characterized by four distinct seasons, is ideal for growing a variety of vegetables and other plants. Crops like tomatoes, peppers, and zucchini thrive in the warm, moist summers, benefitting from adequate rainfall and moderate temperatures. However, crops such as carrots and spinach can encounter struggles due to the high humidity, which may promote fungal diseases during peak growth periods.

What to plant now in Silver Spring

Spring: Start planting cool-season crops such as lettuce, peas, and radishes now until the last frost date of April 16. These crops will germinate quickly and can be harvested before the heat of summer.
Summer: After the danger of frost has passed, you can plant warmth-loving crops like tomatoes, peppers, and beans. Consider planting these in late May to take full advantage of the growing season.
Fall: As the temperatures begin to cool, late summer is ideal for planting fall crops like kale and Brussels sprouts during September. These will mature before the first frost on October 22.
Winter: Although planting is minimal during the winter months, consider indoor gardening options. Herbs like basil or chives can be planted indoors and thrive even during the chilly months.

In Silver Spring (189 frost-free days, a long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.

Month by month in Silver Spring

Month	What to do
January	January is a dormant month for most gardeners in Silver Spring. Plan your garden's layout and order seeds for spring planting. Start indoor seedlings for early crops like tomatoes and peppers.
February	As winter continues, February is ideal for starting seeds indoors, especially cold-tolerant plants like cabbage and broccoli. You can also prepare garden beds by improving soil quality with compost.
March	March marks the beginning of active gardening. Begin sowing seeds for cool-weather crops like lettuce and peas outdoors before the last frost on April 16. Prepare the garden for planting.
April	By early April, most cool-season crops can be directly sown in the garden as the last frost date approaches on April 16. Monitor weather forecasts closely for potential frost events.
May	May is prime planting time. After April 9, plant beans, cucumbers, and summer squash. Proper watering and mulching will help protect young plants as they grow in the warming soil.
June	With summer in full swing, June is the perfect time for maintaining your garden. Ensure consistent watering, control weeds, and harvest early crops like lettuce as they finish.
July	July is hot and can be dry, so focus on watering established crops. Begin planning for fall harvests and consider planting short-season crops like radishes and salad greens again.
August	Use August for planting both fall crops and preparing for winter. Start seeds for late-season vegetables such as Brussels sprouts and kale while maintaining summer crops' watering.
September	As temperatures begin to cool, September is great for planting fall crops. Manage your summer harvest and start seedlings for spinach and root vegetables to maximize the growing season.
October	In October, watch for the first frost on October 22. Finish harvesting summer crops and protect your fall crops. Consider lifting and storing tender plants that cannot survive frost.
November	November is a time for cleaning up the garden. Remove any dead plants and prepare soil for winter. Consider planting cover crops to enhance soil quality over the cold months.
December	In December, focus on planning for next year’s garden. Indoor gardening can thrive with herbs, and plan your seed orders for spring planting to ensure a successful start.

Frost dates for Silver Spring ZIP codes

ZIP	Last spring frost (50%)	First fall frost (50%)	Zone
20906	April 16	October 22	7b
20901	April 9	October 26	7b

FAQ

When is the last frost in Silver Spring?

The last frost in Silver Spring typically occurs around April 16, marking the end of cold spells and the beginning of the planting season.

What vegetables grow best in Silver Spring?

Crops like tomatoes, peppers, and zucchini flourish in Silver Spring’s humid temperate climate, enjoying the long growing season and warm weather.

When should I plant tomatoes in Silver Spring?

Tomatoes should be planted outdoors after the last frost date of April 16, typically in late May for optimal growth.

Can I garden year-round in Silver Spring?

While gardening is active during warmer months, winter gardening is limited. Indoor gardening options for herbs and cool-weather plants can be explored.

How does Plan My Garden help Silver Spring gardeners?

Plan My Garden provides localized planting schedules, gardening tips, and support tailored to the specific requirements and microclimates of Silver Spring, ensuring successful gardening.