The best month to plant melon depends on where you live but falls in late spring for most gardeners. You want warm soil and no frost risk before you put plants in the ground. This means May or June for northern areas and April or May in the south.
I planted melons on the same May date for three years in a row and got mixed results. Some years the soil was warm and plants took off fast. Other years a cold snap hit and set my plants back for weeks. Now I use a soil thermometer instead of the calendar. My success rate went way up.
Soil temperature matters more than the calendar when to plant melons in your garden. Wait until the ground reaches 65-70°F (18-21°C) at four inch depth. Seeds rot in cold soil and young plants stall out. That warm soil makes all the difference for a strong start.
The right melon planting time usually falls 2-3 weeks after your last frost date. This gives soil time to warm up after those final cold nights. In zones 5-6 this means late May through early June. Zones 7-8 can plant in mid April to early May.
Night temperatures also play a role in finding the right time. Wait until nights stay above 55°F (13°C) before you transplant. Cold nights stress young plants even when days feel warm. This extra wait helps your melons grow strong from the start.
Start seeds indoors 3-4 weeks before you plan to transplant outside. This gives you a head start on the season without risking cold damage. Use peat pots so you can plant the whole thing without disturbing roots. Melons hate root disturbance at transplant time.
Southern gardeners can direct seed into the ground as early as late March. The soil warms fast in those regions and the growing season runs long. Northern growers almost always need to use transplants to get enough warm days for fruit to ripen before fall frost.
Black plastic mulch can speed up your melon planting time by warming the soil faster. Lay it down 2 weeks before you plan to plant. The dark surface absorbs heat and warms the ground beneath. You might gain a full week on your planting date this way.
Check both soil and air temps before you commit to planting day. A warm week on the forecast helps too. Once your melons go in they need steady warmth to thrive. The right planting time sets you up for sweet fruit come late summer.
Read the full article: Growing Melons: 9 Reliable Steps for Sweeter Results
