Sedum 'Autumn Joy'

AUTUMN JOY SEDUM
syn. Hylotelephium, Sedum 'Herbstfreude'
Family: Crassulaceae
Pronounced: SAY-dum

 

Quick Jumps

Growing Guide
Rainy Side Notes

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GROWING GUIDE

Origin:
Garden.
Plant Group:
Perennials.
Hardiness:
Sunset zones: 1-10, 14-24.
USDA zones: 3-8.
Heat zones: 10-1.
Mature size:
Height 18-24 inches (45-60 cm).
Width: 24 inches (60 cm).
Flowering period:
July through fall.
Flowering attributes:
Flower heads form in July and the flat corymbs look like broccoli. In August, the flowers start to color up, turning pink. Slowly the flowers turn red, and later in fall they turn a deeper rusty-red.
Leaf attributes:
Succulent, green leaves.
Growth habit:
Upright.
Light:
Full sun to partial shade.
Soil:
Light, well-drained soil.
Feeding:
S. 'Autumn Joy' is not a heavy feeder, but I give it a complete organic fertilizer in spring and side dress with compost or manure.
Propagation Methods:
Stem cuttings.
Division.
My favorite: In early spring pull a rosette off the main plant and transplant the small rosette to a new area in the garden.
Pruning Methods:
No pruning is necessary except to clean up dead stems in late fall. If you leave the plant intact over winter, prune out dead stems in early spring before new growth begins. If you accidentally pull up a rosette while pruning, see propagation method above.

 

Rainy Side Notes

Sedum 'Autumn Joy' technically should be called S. 'Herbstfreude'—it's first naming; however, in English speaking countries it may be hard to wrestle the popular 'Autumn Joy' from our lips and replace it with 'Herbstfreude'. Bred in 1955, this sedum is the most popular plant of the taller ones.

The nomenclature is still a mess on the tall sedums—they've been placed in the Hylotelephium genus, but I haven't seen the industry following suit on the name change yet, so I keep them listed as everyone knows them under the genus Sedum.

It is an easy plant to grow; the flowers add a lot of color to the late summer and fall garden. For best results, grow the tall sedums in full sun. Planted in partial shade, they become leggy and tend to topple over. However, this can also be an indication that it is time to divide the plant.

The Royal Horticultural Society gave Sedum ‘Autumn Joy’ the Award of Garden Merit. For the Pacific Northwest, this should be a top perennial for the garden.

Debbie Teashon
Photographed in author's garden.

More Sedums.