One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You should be able to estimate when it's a good idea to plant hamelia by using the USDA zone info for New Ulm.

Planting Calendar for Hamelia

Frost tolerance for hamelia:	Not tolerant of frost.
When to plant:	After the last frost.

You really shouldn't plant hamelia until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant hamelia in New Ulm 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 hamelia and expect a good harvest is probably August. Any later than that and your hamelia may not have a chance to grow to maturity. If you are starting your hamelia indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is May 15 in New Ulm. It might get as low as -25°F during the coldest months of winter.

Always keep in mind that USDA zone info for New Ulm is just an average and the actual date of last frost changes from year to year. Since half of the time in New Ulm you get a frost after May 15 be ready to cover your hamelia if you have one of those late frosts.

USDA Zone Info for New Ulm

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 New Ulm

You may be interested in your other planting guides for New Ulm.