It needs full sun and some protective mulch in areas with winter frost.

It requires a long hot summer to produce its flowers, and protection from winter frosts.

Now that winter frosts have faded, you should find summer bulbs at most garden centers.

When he looked up again his eyes were cold as winter frost; his voice had the warmth of a January sky.

In cooler latitudes it is killed by winter frost, but can be grown as an annual.

However, winter frosts occasionally extend through into early spring, which can cause damage to the vines.

The winter frosts thaw out in cracks that may be hundreds of years old.

So when the winter frost melts into spring, warm weather is definitely something to celebrate.

Tender: The opposite of hardy; not able to survive winter frosts.

When grown as an ornamental, this plant requires some protection from winter frosts.