Grow spirea in full sun in soil that drains. Spirea is the usual shop spelling. Water the first year. Prune spring types after they bloom, and summer types in late winter.
Full sun, draining soil, and average water
| Factor | Recommended | Avoid |
|---|---|---|
| Light | Full sun, about six hours or more | A shady wall that thins bloom and gold leaves |
| Soil | Average ground that still drains | Standing wet or a low clay bowl |
| Moisture | Weekly water the first year, then average | A basin that never dries |
| Prune | After bloom on spring types; late winter on summer types | One calendar for every shrub |
Full sun and drain are the shared job. [1] Wet soil fails this genus faster than missed water. Water new plants through the first season; established shrubs take dry spells. [2] Gold-leaf summer mounds fade in shade. Prune timing is not shared — that lives in the next section.
- Dig a test hole. If water still stands the next morning, raise the bed or pick another spot.
- Water a new shrub deeply once a week the first season when rain is short. Do not sprinkle a little every day.
- Leave gold-leaf mounds in sun. Shade turns the leaves green and thins the bloom. Do not shear a new shrub into a box.
Does spirea need full sun?
Yes. Give at least six hours. Shade thins bloom and mutes gold leaves.
Does spirea like wet soil?
No. Average water is enough once the shrub is established. Standing wet is the usual fail.
Prune spring types after bloom, summer types in late winter
Spring types flower on last year’s stems. Cut them as soon as the white show fades. Summer types flower on this year’s stems. Cut them in late winter or early spring, before new growth starts. [3] A tired summer mound can be cut to about 6 to 12 inches. Do not cut a spring bridal wreath that hard — you remove next spring’s bloom.
- Read the tag. A spring bridal wreath is not a summer gold mound.
- On a spring type, prune right after bloom. Do not wait until winter.
- On a summer type, prune in late winter or early spring. Deadhead spent heads if you want a second flush.
- Hard-prune a neglected summer mound to 6 to 12 inches. Leave a spring type on the after-bloom cut. [4]
Vanhoutte and ‘Grefsheim’ are spring types. ‘Gold Mound’ is a summer type. Match the kind on Types of Spirea if the tag is vague.
When do I prune spirea?
After bloom on spring types. Late winter or early spring on summer types. Do not use one date for the whole genus.
Why didn’t my spirea bloom?
Usually a winter cut on a spring type, or too little sun. A summer type cut in midsummer also skips the show.
Can I hard prune an old spirea?
Yes on a summer mound — down to about 6 to 12 inches. Do not hard-prune a spring bridal wreath that way.
Full sun, drain, first-year water. Prune spring types after bloom and summer types in late winter. Match the kind on Types of Spirea.
FAQ
Can I grow spirea in a pot?
A compact summer mound can live in a large, draining planter in full sun. An arching bridal wreath belongs in the ground.
Is spirea deer resistant?
Deer often leave it alone, but hungry deer will browse. Do not treat it as deer-proof.
Does spirea attract butterflies?
Yes. Bees and butterflies use the flower clusters. Site in sun so the shrub actually blooms.
How big does spirea get?
From about 2 feet on a compact mound to 7 to 10 feet on Vanhoutte. Read the mature width on the tag.
Is spirea the same as bridal wreath?
Bridal wreath is one spring type, not the whole genus. Types of Spirea sorts the names.
Does spirea need fertilizer?
Usually no on average soil. A light spring feed is enough if growth is poor. Do not force lush, weak wood.
Can I divide spirea?
Yes. Dig and split an established clump in early spring, or take a hardwood cutting. Keep each piece watered the first season.
Will spirea bloom more than once?
Summer types often repeat if you deadhead. Spring bridal wreaths bloom once, then you prune.
Related guides
Recommended plants
References
This note is part of Spiraea Guides.
More first-season notes by plant are gathered in How to Grow Guides.
Updated: Reviewed by Bosquelle Editors