Also known as Spirea · 1k gardener saves

Spiraea: the varieties gardeners actually grow

Spiraea, the genus most gardeners know as spirea. We track 36 varieties; these are the ones gardeners actually save and plant, ranked by real saves rather than catalog marketing. Each links to full care, bloom, and live price data.

36 varietiesZones 4–9Mostly full sun

The 12 most-saved Spiraea varieties

Of 36 in the catalog — ordered by how many gardeners actually grow them.

Browse all 36 Spiraea varieties →

How to grow Spiraea

What the Spiraea varieties in our catalog actually agree on — drawn from the care records of the 36 most-grown of them, not from a generic template.

The Spiraea year

  • PruneFebruary and March100% of varieties

    Cut back by 1/3 to 1/2 in late winter to encourage vigorous new growth and best bloom.

  • DeadheadJune and July72% of varieties

    Shear off spent flower clusters after the first flush to encourage rebloom.

  • FertilizeMarch72% of varieties

    Apply a balanced slow-release fertilizer as new growth begins.

  • PlantMarch, April, September and October47% of varieties

    Plant container stock in early spring or early fall.

Do

  • Water during extended periods of drought.
  • Water regularly during dry periods 🌱
  • Prune after flowering to maintain shape
  • Prune annually in late winter or early spring.
  • Deadhead spent flowers to encourage a second, smaller bloom.

Avoid

  • Don't be afraid to prune it hard; it blooms on new wood.
  • Don’t prune in late fall or winter
  • Avoid overwatering to prevent root rot ❌
  • Don't prune in late summer, fall, or winter.

What goes wrong with Spiraea

ProblemWhat you'll seeWhat to do
AphidsSticky residue and curled leavesUse insecticidal soap or neem oil
Spider mitesWebbing and speckled leavesApply insecticidal soap and increase humidity
Leaf SpotBrown or black spots on leaves, can cause some defoliation.Usually not serious. Clean up fallen debris. Ensure good air circulation. Fungicides are rarely necessary for this tough native.
Generally pest-freeThis is a tough and reliable shrub with few pest problems.Good cultural practices like proper siting and watering are usually sufficient.
Powdery MildewWhite, powdery fungus on leaves, especially in humid weather.Ensure good air circulation. Apply horticultural oil or a fungicide. Most modern cultivars have good resistance.
Leaf SpotSmall, dark spots on leaves, which may yellow and drop prematurely.Improve air circulation by pruning. Rake up and destroy fallen leaves. Apply a copper-based or chlorothalonil fungicide if severe.
Powdery mildewWhite powdery coating on leavesImprove air circulation and apply fungicide

Making more Spiraea

Softwood Cuttings

  1. Take 4-6 inch cuttings from new growth in early summer.
  2. Remove the lower leaves and dip the cut end in rooting hormone.
  3. Stick in a moist, sterile potting mix.
  4. Cover with a plastic bag to maintain humidity; roots form in 4-6 weeks.

Division

  1. Dig up mature shrub in early spring
  2. Divide root clump into sections with a sharp spade
  3. Replant divisions immediately in prepared soil
  4. Water thoroughly after planting

Spiraea questions

How many types of Spiraea are there?

The Sow catalog tracks 36 distinct Spiraea varieties. The most popular — ranked by 1k real gardener saves — are shown first above.

What zones does Spiraea grow in?

Across its varieties, Spiraea covers USDA Zones 4–9. Individual varieties differ — each plant page lists its exact range, and Sow filters the catalog to your zone automatically.

When does Spiraea bloom?

Most Spiraea varieties bloom in late spring to summer, summer, early summer. Staggering early, mid, and late varieties extends the genus's season in one bed.

Which Spiraea should I choose?

Start from the most-saved varieties above — popularity across thousands of gardens is a strong signal of reliability — then filter by your zone and sun. In the Sow app you can preview any of them in a photo of your actual yard before you buy.

Keep exploring

Design with Spiraea in your own yard

Snap a photo of your space and see these varieties planted in it — sized correctly, matched to your zone, with care reminders included.

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