When to Plant in Alpharetta, GA

Alpharetta, Georgia, enjoys a climate characterized by a median last spring frost date of April 10 and a first fall frost on October 27, providing gardeners with approximately 215 frost-free days each year. This extended growing season allows for multiple planting cycles, particularly beneficial for gardeners interested in growing both summer and fall crops. The extended frost-free period also encourages the cultivation of a variety of plants, from annuals to perennials, creating a diverse gardening landscape.

The humid subtropical climate in Alpharetta, marked by long, humid summers, promotes the growth of heat-loving plants such as tomatoes, peppers, and okra, which flourish in the warm temperatures. These crops thrive due to the available warmth and moisture, resulting in robust yields. However, plants like spinach and kale may struggle in the extreme heat, often bolting prematurely or developing tough leaves due to stress from high temperatures. Recognizing these variations can help gardeners optimize their planting schedules and crop selections to the unique conditions of Alpharetta.

What to plant now in Alpharetta

Spring is the perfect time to plant warm-season crops like tomatoes, peppers, and cucumbers. After the last frost on April 10, sow seeds or transplant seedlings directly into the garden from mid-April to late May for best results.
Summer sees the harvesting of crops planted in spring, but it's also an ideal time to sow fast-growing varieties. Consider planting beans and squash as late as mid-July to take advantage of the long summer days before the fall transition.
As fall approaches, plant cool-season crops like broccoli, carrots, and lettuce from late August through September. These crops can be harvested before the first frost on October 27, ensuring a productive fall garden.
In winter, focus on planning your garden and preparing soil. This is the time to start seeds indoors for early spring crops, such as peas and onions. By late February, you can begin to sow outdoors as temperatures warm.

In Alpharetta (200 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 Alpharetta

Month	What to do
January	In January, gardeners can assess last season's performance and start planning for spring planting. Consider ordering seeds and supplies, preparing garden beds, or planting winter cover crops to enhance soil health.
February	February is a time of preparation and anticipation. Start seeds indoors for early spring crops like tomatoes and peppers. As temperatures rise, consider direct sowing crops like peas toward the end of the month.
March	March brings warmer days and the opportunity to plant cool-season crops like lettuce and radishes outdoors. As the last frost date nears, prepare for the upcoming transition with bed preparation and securing seedlings.
April	April is a key month as the last frost typically occurs on April 10. After this date, it’s safe to transplant warm-season crops such as tomatoes and peppers outdoors for optimal growth.
May	May is ideal for planting a variety of warm-season crops. By now, gardeners can expect frost-free conditions, making it a great time to grow cucumbers, corn, and summer squash.
June	In June, focus on maintaining your garden through regular watering and mulching. Harvest early crops like radishes and peas, and continue to sow beans and squash for a bountiful summer.
July	July's heat calls for careful management of moisture levels. This is the time to plant heat-loving crops such as okra and continue to harvest summer vegetables. Ensure that plants are adequately watered.
August	As temperatures begin to cool slightly in August, it’s time to prepare for fall planting. Start sowing cool-season crops like spinach and kale, which thrive in the slightly cooler soil.
September	September is an essential month for fall gardening. Sow seeds for broccoli, carrots, and other cool-weather crops. Be mindful of the approach of the first frost on October 27.
October	October marks the end of the growing season for many crops. Prepare to harvest remaining summer vegetables and start covering fall crops to protect them from potential early frosts.
November	In November, with the first frost on October 27, gardeners should focus on harvesting late-season crops. It's also a good time for clean-up and planning for next year's garden.
December	December is for reflection and preparation. Gardeners can use this month to begin planning for spring planting, focusing on soil health and making decisions about what crops to grow next year.

Frost dates for Alpharetta ZIP codes

ZIP	Last spring frost (50%)	First fall frost (50%)	Zone
30004	April 10	October 27	8a
30022	March 29	November 12	8a

FAQ

When is the last frost in Alpharetta?

The last frost in Alpharetta typically occurs on April 10, which signals the start of the planting season for many warm-weather crops.

What vegetables grow best in Alpharetta?

Vegetables that thrive in Alpharetta's climate include tomatoes, peppers, and eggplants, all of which enjoy the long, warm growing season. Additionally, beans and squash do very well.

When should I plant tomatoes in Alpharetta?

Tomatoes should be planted outdoors after the last frost date of April 10, ideally from mid-April to late May, to ensure a robust growing season.

Can I garden year-round in Alpharetta?

Yes, thanks to the humid subtropical climate and long growing season, Alpharetta allows for year-round gardening. With proper planning, you can grow both fall and spring crops.

How does Plan My Garden help Alpharetta gardeners?

Plan My Garden provides tailored advice for Alpharetta gardeners, offering specific planting dates, crop recommendations, and seasonal guidance suited to the unique hum subtropical climate.