One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The earliest that you can plant bloodleaf in Helena can be estimated by looking at the USDA zone info.

Planting Calendar for Bloodleaf

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

You should not plant bloodleaf until after the last frost has passed because they require warm weather.

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

The last month that you can plant bloodleaf and expect a good harvest is probably August. You probably don't want to wait any later than that or else your bloodleaf may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your bloodleaf indoors.

Last Frost Date

On average the last frost is on May 15 in Helena. You should expect an average low temperature of -25°F in the coldest months of winter.

Keep in mind that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Helena and it is different every year. Half of the time in Helena you get surprised by a frost after May 15 so be sure to be ready to protect your bloodleaf in the event of a late frost.

USDA Zone Info for Helena

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°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 -20°F.

Plants to Grow in Helena

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