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.

The USDA zone info for Ontario can be used to estimate when it's the best time to plant gloriosa lily.

Planting Calendar for Gloriosa Lily

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

Gloriosa Lily do not do well in cold weather which tells us that you have to wait until it warms up after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant gloriosa lily in Ontario 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 gloriosa lily and expect a good harvest is probably September. If you wait any later than that and your gloriosa lily may not have a chance to fully mature. Starting your gloriosa lily indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Ontario the average date of last frost happens on January 31. It might get as low as 30°F during the coldest months of winter.

Since the USDA zone info for Ontario may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Ontario you get a frost after January 31 so just be sure to be ready to cover your gloriosa lily if you have a surprise late frost.

USDA Zone Info for Ontario

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Ontario

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