One of the first steps you take when you are getting a good idea 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.

In South River you can estimate when to plant gladiolus by referring to the USDA zone info.

Planting Calendar for Gladiolus

Frost tolerance for gladiolus:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Gladiolus are one of those plants that can tolerate a tiny bit of cold weather which tells us that you can plant them slightly earlier than other plants that might not handle the cold.

The earliest that you can plant gladiolus in South River 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 gladiolus and expect a good harvest is probably August. If you wait any later than that and your gladiolus may not have a chance to really do well. Starting your gladiolus indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in South River. In the coldest months of winter you can expect an average low temperature of 0°F.

Since the USDA zone info for South River is just an average the actual date of last frost will vary from year to year. Since half of the time in South River it frosts late in the year after April 15 be ready to cover your gladiolus in the event of one of those late frosts.

USDA Zone Info for South River

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in South River

You may be interested in your other planting guides for South River.