The USDA Zone info is a great tool for gardeners to help us determine 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 earliest that you can plant hamelia in Rock Springs can be figured out by reviewing the USDA zone info.

Planting Calendar for Hamelia

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

You should not plant hamelia until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant hamelia in Rock Springs is April. However, you really should wait until May 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 fully mature. You can get started a couple of weeks earlier by starting your hamelia indoors.

Last Frost Date

The average date of last frost is April 15 in Rock Springs. You should expect an average low temperature of -20°F in the coldest months of winter.

Remember that USDA zone info for Rock Springs is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Rock Springs you get surprised by a frost after April 15 so make sure that you are prepared to cover your hamelia if you have a late frost.

USDA Zone Info for Rock Springs

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Rock Springs

You may be interested in your other planting guides for Rock Springs.