One of the first steps you take when you are getting a good idea 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.

One way of making a decision about when you can plant roses is to refer to the USDA zone info for Colville.

Planting Calendar for Roses

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

You can plant roses just a bit earlier in the year because they do well in moderate cold.

The earliest that you can plant roses in Colville 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 grow to maturity. You can get started a little bit earlier by starting your roses indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Colville. It might get as low as -10°F during the coldest months of winter.

It's important to remember that USDA zone info for Colville may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Colville it frosts late in the year after April 15 be ready to cover your roses in the event of one of those late frosts.

USDA Zone Info for Colville

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°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 -5°F.

Plants to Grow in Colville

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