The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Collingswood should be reviewed to determine when it's a good idea to plant diascia.

Planting Calendar for Diascia

Frost tolerance for diascia:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since diascia are moderately cold tolerant you can plant them a little earlier in the year than other frost tender plants.

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

The last month that you can plant diascia and expect a good harvest is probably September. Any later than that and your diascia may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your diascia indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Collingswood. It might get as low as 0°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Collingswood may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Collingswood you get a frost after April 15 be ready to protect your diascia if you have one of those late frosts.

USDA Zone Info for Collingswood

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 Collingswood

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