One of the first steps you take when you are estimating 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 way of figuring out when it's possible to plant portulaca is to check out the USDA zone info for Hornell.

Planting Calendar for Portulaca

Frost tolerance for portulaca:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's a bad idea to plant portulaca until after the last frost when the weather gets warmer because they require warm weather.

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

The last month that you can plant portulaca and expect a good harvest is probably August. Any later than that and your portulaca may not have a chance to fully mature. If you are starting your portulaca indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Hornell. You should expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Hornell is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Hornell there is a last frost after April 15 be ready to cover your portulaca if you have a late frost.

USDA Zone Info for Hornell

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Hornell

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