When to Dig Up Dahlias, Cannas and Gladiolus in Iowa
In Iowa, dahlias, cannas and gladiolus come out of the ground every fall. The signal is a frost that blackens the foliage, and the job follows within one…
When to Dig Up Dahlias, Cannas and Gladiolus in Idaho
In Idaho, dahlias, cannas and gladiolus come out of the ground in the week or two after the first frost blackens their leaves.
When to Dig Up Dahlias, Cannas and Gladiolus in Colorado
In Colorado, dahlias, cannas and gladiolus come up every fall. Denver’s coldest month averages a daily low of 18.4°F (NOAA NCEI 1991-2020 normals), too…
When to Dig Up Dahlias, Cannas and Gladiolus in Alberta
Dig them after the first frost that blackens the foliage, within a week or two of that frost.
When to Dig Up Dahlias, Cannas and Gladiolus in Alaska
In Alaska, dahlias, cannas and gladiolus come out of the ground every fall. The signal is the first frost that blackens the leaves, which in Anchorage…
When to Plant Spring Bulbs: Six Weeks Before the Ground Freezes
Six weeks before the ground freezes solid is the planting window that works, because it gives roots time to establish while the soil is still workable.
Which Spring Bulbs Survive Your Winter — and Which Never Get Enough Cold
Eighteen popular spring bulbs carry hardiness ranges that run from zone 2-8 down to zone 6-9, and that spread is what decides who survives your winter…
Why Spring Bulbs Need Thirteen Weeks of Cold
Thirteen weeks. That’s the span of cold, below 45 F, that a spring-flowering bulb needs to complete before it will send up a bloom instead of just leaves.
Spring Bulbs in Order of Bloom: Seven Waves From Late Winter to Early Summer
Spring bulbs don’t bloom on a single calendar date. They bloom in seven waves, each one triggered by soil warming past whatever threshold that species…
What to Do With Bulb Foliage After Blooming
Leave the foliage standing until it turns yellow and pulls away from the bulb with a gentle tug, usually six to eight weeks after the flowers fade.