Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By using the USDA zone info for Berthoud it's a good idea to estimate when it's a good idea to plant roses.

Planting Calendar for Roses

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

Roses do well in moderate cold which means that you can plant them a little bit earlier than other frost tender plants.

The earliest that you can plant roses in Berthoud 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 roses and expect a good harvest is probably September. You probably don't want to wait any later than that or else your roses may not have a chance to really do well. Starting your roses indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Berthoud. You can expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Berthoud is just an average the actual date of last frost is different every year. Half of the time in Berthoud you get surprised by a frost after April 15 so make sure that you are prepared to cover your roses in the event of a surprise late frost.

USDA Zone Info for Berthoud

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

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

Plants to Grow in Berthoud

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