- April 22, 2009 at 3:54 am #272685
A Dear Friend sent this article today , and I thought of everyone here, so here is her list. Thanks to Deb.
how will you know when a perennial plant needs to be divided?
some may need to be divided every 3-4 years, others will quite
happily grow for up to ten years before they need to be divided,
and a few species don’t like to be divided at all. The best
thing to do is to let the plants tell you when it’s time. Divide
a perennial when you notice any of the following symptoms:
The plant is flowering less than usual and the blooms are smaller
Growth in the center of the plant is dying, leaving a hole in the
center with growth only around the edges
The plant isn’t growing as vigorously as it has in the past
The plant has outgrown its space and is becoming crowded by its
Spring is the best time to divide most perennials, although there
are some exceptions to the rule. Perennials that bloom in the
spring, such as iris and poppies, can be divided in late summer to
early fall. Some plants don’t like to be divided or moved at all.
These homebodies include peonies and tree peonies, foxtail lilies,
bleeding hearts, goats beard and butterfly milkweed.
They should be
divided only when absolutely necessary. Never divide a perennial
while it is blooming as this would be too stressful for the plant.
The first time you divide a perennial, you’re going to be nervous
about it. That’s natural, this process makes every gardener
nervous at first. But the more you divide perennials, the easier
it will become.
Dividing perennials is often more stressful for the
gardener than for the plants.
Follow these simple steps to divide your perennials:
Start by digging around the perimeter of the plant with a sharp
After digging all around the plant, slide your spade beneath the
clump and lift it out of the ground
Use a sharp spade or a knife to cut the clump into smaller, more
Discard any sections of the plant that are dead and trim off any
Keep the divisions moist and in the shade until they can be replanted
Replant the divisions at the same depth the plant was originally
Water the newly planted divisions well and keep them from drying out
while they re-establish themselves
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