Port Jefferson's Hardiness Zone

Our records indicate the United States Department of Agriculture has given Port Jefferson a growing zone designation of 7b. Sometimes also called the planting zone or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Port Jefferson's climate. If you are looking for plants suitable for growing in the Port Jefferson area, head on over to our page on plants that grow well in Port Jefferson, NY.

Self Watering Plant Pots

Innovative pots that maintain optimal moisture levels.

Small Greenhouse Kit

Compact greenhouse perfect for small spaces.

Reusable Grow Bags

Breathable fabric grow bags that promote healthy root growth for your vegetables and fruits.

Shiitake Mushroom Kit

Grow your own delicious shiitake mushrooms at home.

Brass Watering Can

Elegant brass watering can with classic design and durability.

Understanding your growing zone is very important because it is a measure of the lowest temperature that a plant can survive, helping you to decide what plants would grow best in your particular climate. Since Port Jefferson is in growing zone 7b this means that plants there can survive temperatures as low as 10 to 15 degrees Fahrenheit. Plants chosen for Port Jefferson's climate should be chosen with this in mind or plants should be moved inside to keep their core temperature in the right range if necessary.

USDA Growing Zone: 7b

Zip Codes: 11777

Longitude: -73.0577

Latitude: 40.9466

Lowest Avg Temperatures (F): 5 to 10