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

You can figure out when it's possible to plant artichokes in Markham by looking at the USDA zone info.

Planting Calendar for Artichokes

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

Artichokes do well in moderate cold which means that you can start planting them earlier than plants that are more sensitive to the cold.

The earliest that you can plant artichokes in Markham 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 artichokes and expect a good harvest is probably September. If you wait any later than that and your artichokes may not have a chance to fully mature. Starting your artichokes 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 Markham. You should expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Markham is not always accurate the actual date of last frost changes from year to year. Since half of the time in Markham last frost occurs after April 15 be ready to protect your artichokes if you have a surprise late frost.

USDA Zone Info for Markham

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 Markham

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