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.

You will be able to estimate when it's possible to plant dichondra by referring to the USDA zone info for Helena.

Planting Calendar for Dichondra

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

Since dichondra are barely cold tolerant you can plant them slightly earlier in the year than more sensitive plants.

The earliest that you can plant dichondra in Helena 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 dichondra and expect a good harvest is probably August. You probably don't want to wait any later than that or else your dichondra may not have a chance to really do well. If you are starting your dichondra 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 March 15 in Helena. It might get as low as 10°F during the coldest months of winter.

Since the USDA zone info for Helena is an average the actual date of last frost changes from year to year. Since half of the time in Helena you get a frost after March 15 be ready to protect your dichondra if you have one of those late frosts.

USDA Zone Info for Helena

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

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

Plants to Grow in Helena

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