Suggested Perennial Plants to Prune in the Spring -很长# gardening - 拈花惹草
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Suggested Perennial Plants to Prune in the Spring(A-D)
Artemisia Most Artemisia don’t like being pruned in the fall. The growth
that results is too tender to survive
the winter and the dieback is often enough to kill the whole plant. Clean in
early spring. (USDA Zones 5 - 9)
Asters Fall blooming asters have generally been pinched and forced several
times throughout the growing
season. Once they are finally allowed to bloom, they appreciate being left
alone to recuperate, until spring.
Several bloom so late into the fall, the question of fall clean-up becomes
moot. (USDA Zones 4 - 8)
Astilbe Astilbe don’t require much maintenance. Fall clean-up is
unnecessary and may weaken the plant’s
tolerance for cold. Minimal spring clean-up is required. (USDA Zones 3 - 8)
Balloon Flower (Platycodon grandiflorus) If pruned for sturdiness, Balloon
flower blooms late in the season
and remains attractive until frost. Since it is late emerging in the spring,
it helps to leave the old foliage as a
marker. (USDA Zones 3 - 8)
Basket-of-Gold (Aurinia saxatilis) Although Aurinia fares best and lives
longer if sheared back after
flowering and not allowed to go to seed, the foliage can be evergreen in
mild winters and there doesn’t
seem to be any benefit to cutting it back until spring. (USDA Zones 3 - 7)
Bear’s Breeches (Acanthus spinosus) You may need to cut back old, dying
foliage throughout the growing
season, but the new healthy growth remaining in the fall could well remain
evergreen throughout the
winter, depending on weather conditions. (USDA Zones 6 - 10)
Black-eyed Susan (Rudbeckia fulgida) Although not particularly attractive in
winter, the seed heads will feed
the birds. (USDA Zones 3 - 9)
Blue Mist Shrub (Caryopteris) Caryopteris bloom on new growth. Cut back to 6
-8 inches in the spring.
Newer varieties, especially, can be very sensitive to cold and shouldn't be
cut back until buds begin to
green. (USDA Zones 5 - 9)
Butterfly Bush (Buddleia davidii) To lessen winter kill, wait for signs of
green at the base and then cut back
to 6 - 10 inches. (USDA Zones 6 - 9)
Butterfly Weed (Asclepias tuberosa) Although Asclepias is a prolific self-
seeder and should be deadheaded
if dozens of new plants are not wanted, it winters better if the foliage is
allowed to protect the crown. (USDA
Zones 4 - 9)
Campanula Most campanulas get sheared back at some point during the summer,
to clean up ugly or
damaged foliage and encourage another flush of blooming. Fresh basal foliage
will result and should be left
through winter, so as not to encourage more tender growth in the fall. (USDA
Zones 3 - 8)
Cardinal Flower (Lobelia cardinalis) Although Cardinal Flower likes moist
soil, it doesn’t like sitting in cold,
wet soil all winter. Leaving the foliage and flower stems in tact protects
Cardinal Flower from some of the
ravages of winter, so hold off clean-up until spring. At that point, you can
trim the damaged areas or
simply cut back to the ground. (USDA Zones 3 - 9)
Coral Bells (Heuchera) Heuchera are prone to heaving in soils that freeze
and thaw. Leaving the foliage in
tact helps to mulch the plants through winter. (USDA Zones 4 - 9)
Cushion Spurge (Euphorbia polychroma) In warmer climates, Euphorbia can
actually become a shrub and it’s
fine to leave the plant alone until spring and then clean out the dead
foliage. In colder climates, simply cut
the plant back to its base in the spring. (USDA Zones 4 - 8)
Delphinium If you’re lucky enough to grow Delphiniums as perennials, remove
the flower stalks, but allow
the foliage to remain until spring. (USDA ones 3 - 7)
Dianthus Most Dianthus can remain somewhat evergreen throughout the winter
and nothing is gained by
cutting back in the fall. They will still need some clean-up in the spring.
(USDA Zones 5 - 8)
Suggested Perennial Plants to Prune in the Spring(A-D)
Artemisia Most Artemisia don’t like being pruned in the fall. The growth
that results is too tender to survive
the winter and the dieback is often enough to kill the whole plant. Clean in
early spring. (USDA Zones 5 - 9)
Asters Fall blooming asters have generally been pinched and forced several
times throughout the growing
season. Once they are finally allowed to bloom, they appreciate being left
alone to recuperate, until spring.
Several bloom so late into the fall, the question of fall clean-up becomes
moot. (USDA Zones 4 - 8)
Astilbe Astilbe don’t require much maintenance. Fall clean-up is
unnecessary and may weaken the plant’s
tolerance for cold. Minimal spring clean-up is required. (USDA Zones 3 - 8)
Balloon Flower (Platycodon grandiflorus) If pruned for sturdiness, Balloon
flower blooms late in the season
and remains attractive until frost. Since it is late emerging in the spring,
it helps to leave the old foliage as a
marker. (USDA Zones 3 - 8)
Basket-of-Gold (Aurinia saxatilis) Although Aurinia fares best and lives
longer if sheared back after
flowering and not allowed to go to seed, the foliage can be evergreen in
mild winters and there doesn’t
seem to be any benefit to cutting it back until spring. (USDA Zones 3 - 7)
Bear’s Breeches (Acanthus spinosus) You may need to cut back old, dying
foliage throughout the growing
season, but the new healthy growth remaining in the fall could well remain
evergreen throughout the
winter, depending on weather conditions. (USDA Zones 6 - 10)
Black-eyed Susan (Rudbeckia fulgida) Although not particularly attractive in
winter, the seed heads will feed
the birds. (USDA Zones 3 - 9)
Blue Mist Shrub (Caryopteris) Caryopteris bloom on new growth. Cut back to 6
-8 inches in the spring.
Newer varieties, especially, can be very sensitive to cold and shouldn't be
cut back until buds begin to
green. (USDA Zones 5 - 9)
Butterfly Bush (Buddleia davidii) To lessen winter kill, wait for signs of
green at the base and then cut back
to 6 - 10 inches. (USDA Zones 6 - 9)
Butterfly Weed (Asclepias tuberosa) Although Asclepias is a prolific self-
seeder and should be deadheaded
if dozens of new plants are not wanted, it winters better if the foliage is
allowed to protect the crown. (USDA
Zones 4 - 9)
Campanula Most campanulas get sheared back at some point during the summer,
to clean up ugly or
damaged foliage and encourage another flush of blooming. Fresh basal foliage
will result and should be left
through winter, so as not to encourage more tender growth in the fall. (USDA
Zones 3 - 8)
Cardinal Flower (Lobelia cardinalis) Although Cardinal Flower likes moist
soil, it doesn’t like sitting in cold,
wet soil all winter. Leaving the foliage and flower stems in tact protects
Cardinal Flower from some of the
ravages of winter, so hold off clean-up until spring. At that point, you can
trim the damaged areas or
simply cut back to the ground. (USDA Zones 3 - 9)
Coral Bells (Heuchera) Heuchera are prone to heaving in soils that freeze
and thaw. Leaving the foliage in
tact helps to mulch the plants through winter. (USDA Zones 4 - 9)
Cushion Spurge (Euphorbia polychroma) In warmer climates, Euphorbia can
actually become a shrub and it’s
fine to leave the plant alone until spring and then clean out the dead
foliage. In colder climates, simply cut
the plant back to its base in the spring. (USDA Zones 4 - 8)
Delphinium If you’re lucky enough to grow Delphiniums as perennials, remove
the flower stalks, but allow
the foliage to remain until spring. (USDA ones 3 - 7)
Dianthus Most Dianthus can remain somewhat evergreen throughout the winter
and nothing is gained by
cutting back in the fall. They will still need some clean-up in the spring.
(USDA Zones 5 - 8)