cactus succulent

Green Cockscomb

Sedum praealtum

The Story

Plant Bio

Sedum praealtum is a sprawling, semi-woody succulent subshrub native to Mexico, forming dense clumps of glossy, lime-green leaves arranged in rosettes at the branch tips. In late winter and spring, it produces large, pyramidal clusters of star-shaped, bright yellow flowers above the foliage.

This species is distinguished by its shrubby, branching habit and woody stems that frequently root where they touch the ground, allowing it to spread as a structural groundcover. The fleshy, spatula-shaped leaves develop a reddish margin when exposed to bright sun or mild drought.

Uses & Benefits:

Provides year-round structural interest with glossy lime-green rosettes and a dramatic display of bright yellow flowers in late winter.

Serves as an excellent low-water groundcover for dry, sloping sites, helping to stabilize soil with minimal irrigation.

Flowers attract generalist native bees and other beneficial insect pollinators during the late winter and early spring.

Essentials

At a Glance

Plant Type

Cactus Succulent

Height

36"

Width

48"

Light

Full Sun, Partial Sun

Zones

9, 10

Water

Low

Humidity

Moderate to Low

Lifespan

Perennial

Native To

Mexico

Toxicity

Mildly toxic to pets

Bloom period

Late winter – Spring

In flower about 4 months of the year

Planting

How to Grow

Select a planting site with full sun to partial shade and exceptionally sharp-draining, sandy or rocky soil.
Dig a hole twice the width of the root ball but no deeper, ensuring the crown sits slightly above the surrounding soil level.
Water sparingly immediately after planting to settle the soil, then withhold water until the top few inches of soil are completely dry.
Apply a thin layer of gravel mulch around the base of the plant to keep the lower leaves off damp soil and prevent rot.

Pro Tip

Prune only into active, leafy green growth; hard cuts into old, bare woody stems will fail to regenerate new shoots.

Keep It Thriving

Care Guide

Do

Grow in poor, gritty, or sandy soils to maintain a compact, sturdy growth habit.
Allow the soil to dry out completely between waterings, especially during the summer dormant period.
Protect the plant from hard freezes by moving containers indoors or covering outdoor specimens when temperatures drop below 25°F.

Don't

Do not plant in heavy clay or poorly drained soils that hold moisture around the roots.
Do not overwater or allow the plant to sit in standing water, which rapidly induces root and stem rot.
Do not prune heavily into old, bare, woody stems, as they lack the nodes to regenerate new foliage.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Pest Check
Propagate
Prune
Winter Prep

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Rock GardensDry BordersCoastal GardensContainer SpecimensGroundcover

Companion Plants

Agave attenuata Senecio mandraliscae Aloe arborescens Echeveria gibbiflora

Multiply

Propagation Methods

Good to Know

Common Questions

Green Cockscomb questions

What zones can Green Cockscomb grow in?

Green Cockscomb is hardy in USDA Zones 9–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Green Cockscomb deer resistant?

Not reliably. Deer may browse Green Cockscomb, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Green Cockscomb bloom?

Green Cockscomb typically blooms in late winter through spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Green Cockscomb need full sun?

Green Cockscomb does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Green Cockscomb drought tolerant?

Yes — once established (usually after the first full season), Green Cockscomb handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.