Product Field NotesCompanion Plants
Permanent Wave Mangave: A Silver Showpiece for Summer Pots
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Permanent Wave mangave is a large, sculptural succulent with massive paddle-shaped leaves that can exceed 6 inches wide at maturity. The leaves are a waxy, powdery silver with a slight blue cast, and their edges ripple in gentle waves lined with cinnamon-brown teeth. Those teeth often leave imprints on neighboring leaves, adding a subtle pattern to the rosette.
It looks like a slow, stately agave but grows much faster, reaching about 1½ feet tall and up to 3 feet wide.
Permanent Wave at a glance
| Trait | What to expect |
|---|---|
| Botanical name | × Mangave 'Permanent Wave' |
| Foliage | Waxy silver paddles with rippled, cinnamon-toothed edges |
| Size | 18 to 20 inches tall, 32 to 36 inches wide |
| Flowers | Rarely flowers |
| Hardiness | USDA zone 11 outdoors; a summer container plant in Michigan |
| Light | Full sun |
| Water | When the soil is dry |
| Deer | Resistant |
Silver and spikes with lavender
Mangave loves the same full sun and sharp drainage that lavender does, so a big pot of Permanent Wave set at the end of a lavender row, on a sunny gravel patio or beside potted lavender looks right at home. The silver leaves echo lavender's gray foliage, while the bold paddles and warm cinnamon edges make a dramatic contrast with lavender's fine texture.
Think of it as the summer centerpiece: out with the lavender from late spring to fall, then indoors for winter. Plan the patio in the Companion Plant Planner.
Container care
- Pot: a large, heavy container with a drainage hole; it can reach 3 feet wide.
- Mix: gritty, fast-draining soil or cactus mix.
- Sun: full sun gives the strongest leaf color and spotting.
- Hardening off: move it outdoors gradually in spring so the leaves do not sunburn.
- Water: when the soil is dry, then let it drain fully.
Winter indoors
Permanent Wave is hardy outdoors only in zone 11, so in the Great Lakes region it comes inside every fall. Bring it in before nights drop below about 40°F and give it a bright window or greenhouse. Water sparingly until spring, then move it back out once the weather settles. The Frost Date Estimator helps time the move.
Handling
As with agave, the sap can irritate skin and the leaf edges are toothed, so wear gloves when repotting. It is grown as an ornamental, not for eating.
Frequently asked questions
How fast does it grow?
Much faster than a typical agave, which is part of its appeal for container gardeners.
Can it go in the ground for summer?
It can, but a container makes the fall move indoors far easier.
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