Question 1

When should I plant watermelon in ZIP 38103?

Accepted Answer

In ZIP 38103, the main watermelon target is around Apr 8, based on the representative Memphis frost station and USDA zone 8a.

Question 2

When should I start watermelon seeds indoors in 38103?

Accepted Answer

Start watermelon seeds indoors in ZIP 38103 around Mar 4, about 21 days before the Mar 25 last-frost estimate.

Question 3

When is the last frost in Memphis?

Accepted Answer

Memphis (ZIP 38103) has an average last spring frost around Mar 25, based on the representative Memphis frost station.

Question 4

When is the first frost in Memphis?

Accepted Answer

Memphis (ZIP 38103) has an average first fall frost around Nov 5, leaving about 225 frost-free days.

Question 5

Is this a guaranteed planting date?

Accepted Answer

No. GrowZone uses frost-date estimates, hardiness zones, and crop timing rules for planning. Local microclimates and current weather can shift the right date.

Step	Date	How to use it
Start Indoors	March 4, 2026	Start seeds under lights or in a bright indoor seed-starting space.
Transplant Outdoors	April 8, 2026	Move hardened-off seedlings outside after the frost-risk window.
Direct Sow	April 8, 2026	Sow seed outside when the crop and soil can handle the window.

Start watermelon seeds indoors around Mar 4

Watermelon dates for Memphis, TN