One of the first steps you take when you are estimating 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.

The USDA zone info for Denver can be looked at to figure out when it's possible to plant flowering tobacco.

Planting Calendar for Flowering Tobacco

Frost tolerance for flowering tobacco:	Not tolerant of frost.
When to plant:	After the last frost has passed.

It's probably a bad idea to plant flowering tobacco until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant flowering tobacco in Denver 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 flowering tobacco and expect a good harvest is probably August. You probably don't want to wait any later than that or else your flowering tobacco may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your flowering tobacco indoors.

Last Frost Date

In Denver the average date of last frost happens on April 15. It might get as low as -15°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Denver 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 Denver you get surprised by a frost after April 15 be ready to cover your flowering tobacco in the event of a late frost.

USDA Zone Info for Denver

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 Denver

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