One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of getting a good idea when it's a good idea to plant watermelon is to use the USDA zone info for Milpitas.

Planting Calendar for Watermelon

Frost tolerance for watermelon:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's not a good idea to plant watermelon until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant watermelon in Milpitas is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant watermelon and expect a good harvest is probably September. Any later than that and your watermelon may not have a chance to really do well. Starting your watermelon indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average all chance of frost has passed is on February 15 in Milpitas. It might get as low as 25°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Milpitas is not always accurate and the actual date of last frost is different every year. Half of the time in Milpitas you get a frost after February 15 so make sure that you are ready to cover your watermelon in the event of a late frost.

USDA Zone Info for Milpitas

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Milpitas

You may be interested in your other planting guides for Milpitas.