One of the best tools that you have as gardeners to help us determine your gardening schedule is the 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 Iron Mountain can be looked at to determine when it's the best time to plant gloriosa daisy.

Planting Calendar for Gloriosa Daisy

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

Since gloriosa daisy do well in moderate cold you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant gloriosa daisy in Iron Mountain is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant gloriosa daisy and expect a good harvest is probably August. If you wait any later than that and your gloriosa daisy may not have a chance to really do well. You can get started a little bit earlier by starting your gloriosa daisy indoors.

Last Frost Date

In Iron Mountain the average date of last frost happens on May 15. It might get as low as -30°F during the coldest months of winter.

Keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Iron Mountain and it will vary from year to year. Half of the time in Iron Mountain last frost occurs after May 15 so make sure that you are prepared to cover your gloriosa daisy in the event of a surprise late frost.

USDA Zone Info for Iron Mountain

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°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 -25°F.

Plants to Grow in Iron Mountain

You may be interested in your other planting guides for Iron Mountain.