When to Plant Tomato Plants in Philadelphia

Tomato plants are a popular vegetable for home gardeners in Philadelphia. Proper timing of planting is essential in order to ensure a successful crop. Here is everything you need to know about when to plant tomato plants in Philadelphia.

Climate in Philadelphia

Philadelphia is located in Zone 7a of the USDA Plant Hardiness Zone Map. This means that the average minimum winter temperature is between 0 and 5 degrees Fahrenheit. The growing season typically lasts from mid-April to mid-October, and the average last frost date is April 15.

Choosing the Right Variety

When selecting a tomato variety to plant in Philadelphia, it is important to consider both the length of the growing season and the amount of space available in your garden. Determinate varieties tend to be smaller and more compact, making them a good choice for gardeners with limited space. Indeterminate varieties, on the other hand, can grow up to 6 feet tall and require more space.

Seed vs. Transplant

Tomato plants can be started from either seeds or transplants. Starting from seeds allows for more variety selection, but also adds an additional 6-8 weeks to the planting process. Transplants can be purchased from garden centers or nurseries, and should be planted after the last frost date. When selecting transplants, look for plants that are compact, with deep green leaves and sturdy stems.

When to Plant

Tomato plants should be planted outside after the last frost date, which in Philadelphia is typically April 15. The soil temperature should be at least 60 degrees Fahrenheit before planting, as colder soil temperatures can stunt growth and increase the risk of disease. If starting from seeds, begin the process 6-8 weeks before the last frost date.

Planting and Care Tips

When planting tomato plants in Philadelphia, select a location with full sun and well-draining soil. Dig a hole deep enough to cover the roots and the bottom few inches of the stem. Water immediately after planting, and continue to water regularly throughout the growing season, aiming for 1-2 inches of water per week. Fertilize every 3-4 weeks with a balanced fertilizer, and remove any suckers that may appear.

Conclusion

Tomato plants are a rewarding addition to any home garden in Philadelphia. By considering factors such as climate, variety selection, and planting timing, gardeners can ensure a bountiful crop of fresh, juicy tomatoes.