Sedum (Showy Stonecrop) in Zone 4a & 4b

Hylotelephium spectabile

When to plant sedum (showy stonecrop) in zone 4b

Zones 4a and 4b share the same average frost dates in our data, so this page covers both.

Method: Direct sow: Direct-sow outside. Sedum (Showy Stonecrop) doesn't transplant well, or doesn't need the extra time indoors.

Start indoors	Not typically started indoors
Direct sow / transplant outside	May 1–May 8
Estimated bloom	Apr 30 '28–May 7 '28 (First real harvest the season after planting)

Spacing: about 2 square feet per plant (square-foot-gardening spacing). Mature height: 1-2 ft.

Showy stonecrop is the border sedum with flat flower heads that open dusty pink in late summer and dry to rust.

How sedum (showy stonecrop) fits zone 4's season

Zone 4b's frost-free window runs about 128 days, from May 15 to September 20. Sedum (Showy Stonecrop) takes about 1 growing season to reach full flowering, so what matters here is how many of these seasons it gets, not whether one is long enough.

Sedum (Showy Stonecrop) is hardy in zones 4-9, so in zone 4b it stays in the ground through winter and comes back rather than being replanted. Allow about 1.5 ft of spread at maturity.

Good companions

No standout companions recorded yet for Sedum (Showy Stonecrop).

Where to buy sedum seeds

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