Spiraea bumalda ‘Goldmound’ (Spirea)

by Everchanging Gardener

in Spireae - Spirea

Height: 80 cm (2 feet)
Spread: 100cm (3 feet)
Bloom: light pink, mid-summer, slight rebloom in late August
Foliage: yellow to chartreuse green but on the brighter yellow side in full sun
Spring foliage: same

Pluses: Foliage colour, size and shape, easy care

I have several Goldmound Spirea’s grown mostly for their bright yellow-green foliage colour. They make a great accent plant and are good massed. I have several that are now about 30 inches high and 3-4 feet across. The actual size depends on whether or not you prune them back in late July.

Spirea Goldmound foliage

Spirea Goldmound is grown mostly for it's brilliant yellow-gold foliage

A great low maintenance shrub, Spirea Goldmound does not really need to be pruned in summer if you don’t want to. I usually prune mine each spring prior to or just as they are leafing out for shape and size. I prune some again after they have bloomed in July and leave some unpruned (mostly those in the outer gardens). The dead flowerheads on Goldmound are pale enough that they do not really detract from the appearance of the plant. For specimen plants deadheading does make the plant look better and you will be rewarded with a second flush of blooms in late summer. If you do prune in July the foliage will be a bit more on the lime-green side until the sun turns new growth yellow.

The flowers are light pink, appear in mid-summer and have a frothy airy appearance. They largely fade into the brighter foliage are are not the main attraction of this shrub.

Spirea Goldmound flowers

Spirea Goldmound flowers are light pink and largely fade into the foliage

Fall foliage can provide steaks of orange and reds amid the golden foliage.

As with all summer blooming spireas, Goldmound needs a heavy pruning two or three times their first two seasons. They grow so fast they are a bit leggy the first and sometimes second season so pruning keeps them bushy and in shape but I have found by the third season they generally keep the nice mounded shape on their own.

Garden Locations: Kitchen Patio Garden, Bird Sanctuary Garden, East Garden, Woodland Garden. Most are mass planted, often curving around larger shrubs such as Euonymus alatus (Burning Bush) or Red Prince Weigela.

{ 4 comments… read them below or add one }

Linda D August 5, 2012 at 3:29 am

Can I divide & transplant a mature spirea?

Everchanging Gardener August 5, 2012 at 1:18 pm

Hi Linda
A spirea is a shrub and usually doesn’t take to well to being divided like a perennial. Having said that you have a couple options —
Sometimes you can find a sucker that rooted out from the main shrub and you can dig that one out, cut it off from the main plant and it will transplant. I’ve done this with quite a few shrubs. The key is to look for a section of the plant on the outside that looks partially separated from the main crown (that is appears to have it’s own center).
You can create your own sucker but gently pushing a branch to the ground and placing a rock or big pile of dirt on top the middle of the branch. Where it touches the soil, the spirea will sprout new roots. When these are large enough, cut the ‘new’ shrub off from the old plant, dig it up and transplant. This usually takes about a season.
I also find I get a lot of seedlings which if left to get big enough transplant well.
If your concern is that the shrub is too large, you can also cut it right back to the ground in spring.
Hope that helps.
Sharon

Irena October 5, 2012 at 10:20 pm

Can I prune my gold mound spirea in mid October? It has become ugly and would like to prune it down to 3 or 4 inches.

Thanks!

Everchanging Gardener October 9, 2012 at 1:22 pm

Hi Irena,
I find you can prune spireas almost any time. In fact I just pruned some of mine back this past week myself. I think the only time I might avoid would be early September in our area (Ontario) just so I don’t have any new growth on the tips heading into winter.
Hope that helps
Sharon

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