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Terrific Tall Sedums (Short on Flaws)

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Veronica Lorson Fowler Add to Journal

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Sedum Frosty Morn
Photo Credit: Yoder Brothers Co.
Next time you’re in the garden center, ask about neat variegated sedums like beautiful ‘Frosty Morn’ stonecrop.

If you walk into a garden center and ask for a sedum, you’re likely to be asked right back, “Which one?” The fact is, there are just so many of these terrific plants – about 400 species worldwide! And the selections available for the garden all share some wonderful characteristics: plump, waxy, interesting leaves and fascinating flowers. What’s more? They’re some of the lowest-maintenance plants around!

These sun-loving succulents are especially good in hot, dry spots that bake all afternoon long. While the low-growing sedums tend to do better in desert conditions, the taller types are generally more cold-hardy. In fact, tall sedums work just about anywhere in the country, with most of them enduring even USDA hardiness Zone 3 winters (the northernmost part of the country). And they’ll do well right through Zone 10 in the southernmost region of the US.

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Sedum Brilliant
Photo Credit: Yoder Brothers Co.
‘Brilliant’ sedum features flowers that tend more toward magenta, making it a little different than most of its kind.

Exactly how tall are “tall” sedums? They typically grow between 10 and 24 inches – sometimes a bit higher. These succulent wonders mix perfectly into flower beds and borders – and they even look great in their own bed! They’re perhaps the only perennial in the garden that looks good from the moment it emerges from the ground in spring on through fall (when it peaks with its flower show) and into winter. In fact, many gardeners don’t cut back their tall sedums in fall during garden cleanup. Instead, they allow them to dry, untouched in the garden, where they add winter interest and look lovely with a dusting of snow.

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Sedum Autumn Fire
Photo Credit: Jessie Keith
‘Autumn Fire’ sedum is a wonderful alternative to the ever-popular ‘Autumn Joy’ because it doesn’t get as lanky.

As more gardeners discover sedums, plant breeders have responded by offering more varied types. ‘Autumn Joy’ sedum (Sedum spectabile 'Autumn Joy' – also known as S. spectabile 'Herbstfreude') is by far the most popular, but it can get tall and floppy. If that’s an issue for you, check out 'Autumn Fire' sedum, which is very similar but has a tighter growth habit. (Its flowers are also a more intense brick red.) And keep an eye out for more varied foliage in tall sedums. Increasingly, variegated, lime-green and burgundy-colored leaves are becoming available to home gardeners.

Tips
  • The only complaint many gardeners have about tall sedums is that they tend to flop after a year or two. (‘Autumn Joy’ sedum is especially bad about this.) You can prevent this problem by using very little to no fertilizer and keeping water to a minimum (both contribute to lankiness). You can also divide tall sedums every other year to control the flopping. Or choose a sedum that isn’t quite as high, like ‘Matrona’ or ‘Ruby Glow’, which hit just 1-2 feet tall.
  • Sedum draws in the bees and butterflies! (And that’s a good thing because bees are key to healthy gardens.) Cluster several plants together to make a giant billboard of sorts for the wildlife. Just be sure to plant them where bees won’t be a problem – which means avoiding narrow paths or too close to grass where your kids may be barefoot. After all, stepping on a bee is one of the most common ways people get stung!
Facts
  • Sedum is such a huge group of plants, botanists have decided to split them up. Some of the plants that previously went under the botanical name "Sedum" now go under Hylotelephium. But don’t worry. You can pretty much just ask for “sedum” at your local garden center. (Botanical name changes are slow to come into popular use.)
  • Most tall sedums have green foliage with deep rose-colored flower heads, which butterflies and bees swarm in late summer. They’re also a great cutflower, lasting for weeks in a vase if you change the water regularly.
Resources
  • You can find more information on Sedum varieties in our Learn2Grow Plant Database.
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Articles
  • Celebrate ‘Autumn Joy’
    ‘Autumn Joy’ sedum is low-maintenance perennial that offers something pretty to look at year-round, but watch out come fall: The changing bloom color of this already-attractive succulent is a real showstopper!
  • Low-Growing Sedums for High-End Results
    Looking for a tough plant that can work in all kinds of difficult spots? Give low-growing sedums a try. Not only do these succulent beauties survive tricky garden spots, they look great doing it – and without much water!
  • Super Succulents for Your Garden
    Think succulents are just for the desert? Not true! These water wise “camels” of the plant world can grow almost anywhere. Just find the right ones for your neck of the woods, then watch your garden flourish – no matter how dry it gets!
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