Product Field NotesCompanion Plants
Moonglow Mangave: A Silver-Blue Starburst Dotted with Purple
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Moonglow mangave has a surreal, moonlit look. Its long, straight, silvery blue-green leaves are marked with large dark purple spots that grow more intense in strong sun, and they are held rigidly out to the sides in a low, wide rosette about 8 to 10 inches tall. From above it looks like a pale blue starburst sprinkled with purple.
Silver and purple are lavender's own colors, so few container plants match a lavender garden better. It is hardy only in warm zones, though, so here it is a summer pot that winters indoors.
Moonglow at a glance
| Trait | What to expect |
|---|---|
| Botanical name | × Mangave 'Moonglow' |
| Foliage | Silvery blue-green with large dark purple spots; leaves about 1 inch wide |
| Flowers | Rarely flowers |
| Size | 8 to 10 inches tall, 16 to 20 inches wide |
| Hardiness | USDA zones 8 to 10 |
| Light | Full sun |
| Deer | Resistant |
Matching the lavender palette
Most container accents bring a new color into a garden. Moonglow repeats the ones already there: the blue-silver of lavender leaves and the purple of its flowers, in a bold, geometric shape. A low, wide bowl of Moonglow on a sunny gravel patio, a stone wall or the steps beside a lavender bed looks deliberate and calm. Because it stays low, it also works as a tabletop pot on a sunny deck.
Try a trio of shallow bowls lined up along the front of a lavender row, or one large container at a path junction. Plan placements in the Companion Plant Planner.
Keeping the spots vivid
- Sun: the purple spotting deepens with strong light. In shade the leaves look washed out.
- Mix: gritty, fast-draining soil or cactus mix in a pot with a drainage hole.
- Water: water thoroughly when the mix is dry, then let it dry again.
- Feeding: little or none. Lean growing keeps the rosette tight.
Bringing it in for winter
Before the first frost, move Moonglow indoors to the sunniest window you have, such as a south-facing one. Water sparingly through winter while growth is slow. In spring, once frost danger has passed, move it back outside gradually, starting in bright shade for a few days so the leaves adjust before full sun. The Frost Date Estimator helps with timing on both ends.
Its rigid, nearly horizontal leaves carry tiny edge spines and soft tip spines, so place it where elbows and small hands will not bump it.
The plug tray format
Moonglow is offered as a full 72-cell plug tray, a good fit for growers and anyone potting up containers in quantity. See the product page for current availability, or the Wholesale Hub for tray orders.
Frequently asked questions
Can I plant it directly in the lavender bed?
Only for the summer, and lifting it in fall is a chore. A pot set among the lavender is easier and keeps the drainage perfect.
Will it bloom?
Moonglow rarely flowers. It is grown for its foliage, which looks good every day of the season.
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