Avoid the most common pruning mistakes by not cutting these shrubs and perennials back in fall.

However, pruning plants at the wrong time of the year can actually inhibit flowering and cause other issues.

The following plants should never be pruned in autumn.

pink and white Azalea blooms

Credit:Bob Stefko

Lilacs

Pruning is an essential task if you keeplilac shrubs(Syringaspp.)

Coneflower

Coneflower plants(Echinaceaspp.)

Globe Thistle

Like coneflowers,globe thistle(Echinops ritro) plants produce seed-filled flower heads.

Lilac Syringa ‘Virtual Violet’

Credit: Jacob Fox

However, this perennial plant can be susceptible to winter damage, especially if pruned late in the season.

Black-eyed Susan

Black-eyed Susan(Rudbeckiaspp.)

The cold hardy hydrangea varieties that bloom on new wood can be successfully pruned in autumn.

forsythia-yellow-northern-sun-3fde1a2f

Credit: Todd Dacquisto

Mock Orange

Mock oranges(Philadelphusspp.)

In fact, some gardeners allow these plants to grow a bit wild.

In fall, leaving your milkweed standingprovides shelter for pollinatorsthat make nests in hollow stems.

echinacea purpurea coneflower

Credit: Bob Stefko

globe thistle Echinops bannaticus ‘Blue Glow’

Credit: Peter Krumhardt

russian sage

Credit: Peter Krumhardt

black-eyed susan

Credit: Perry L. Struse

Oakleaf Hydrangea

Credit: Ralph Anderson

Galahad mock orange

Credit: Bill Stites

ladys mantle alchemilla mollis

Credit: Janet Mesic-Mackie

heuhera peach flamber coral bells

prairie milkweed Asclepias sullivantii

Credit:Charles Mann