Plant false lily of the valley in spring or early fall. Set the rhizome just under the soil surface, and space low carpets 6 to 12 inches.
Plant in spring or early fall
| Factor | Recommended | Avoid |
|---|---|---|
| When | Spring as growth starts, or early fall while soil is workable | Digging in midsummer heat |
| Depth — carpet | Rhizomes 1 to 2 inches deep | Burying a shallow woodland rhizome like a tulip |
| Depth — pot | Same depth as the nursery pot; crown at grade | Sinking the crown below grade |
| Spacing — carpet | 6 to 12 inches | Ten pots in one square foot for instant fill |
| Spacing — plume | About 18 to 24 inches | A packed wet ribbon with no air |
Work in cool soil. Divide or set plants in spring as growth starts, or in early fall before the ground freezes. [1] Nursery stock is almost always a rhizome division, not a seed packet. [2]
When should I plant false lily of the valley?
Spring as growth starts, or early fall while the soil is still workable. Skip midsummer heat.
How to plant false lily of the valley
Work one patch at a time: loosen moist woodland soil, set the piece, then water to settle.
- Confirm Maianthemum — not lily-of-the-valley (Convallaria) and not true Solomon's seal (Polygonatum).
- For a bare rhizome: lay it just under the soil, about 1 to 2 inches deep for the low carpets. [3]
- For a nursery pot: dig a hole as deep as the pot and a little wider. Set the crown at the same depth it grew.
- Water once to settle. Mulch with a thin layer of shredded leaves.
How deep do I plant it?
Low-carpet rhizomes sit 1 to 2 inches deep. A nursery pot sits at the same depth it grew — crown at grade, not buried.
Space the plants — and what fails
Low carpets need 6 to 12 inches so the colony can knit. Taller plume kinds want about 18 to 24 inches. [4] Crowding plus a wet winter puddle is the usual rot setup.
How far apart do I plant it?
Low carpets 6 to 12 inches. Give taller plume kinds about 18 to 24 inches so the arching stems can open without rotting in a wet tangle.
- Midsummer digging — cool soil in spring or early fall is the window.
- A deep bury on a shallow rhizome — it belongs near the surface.
- Ten pots in one square foot — the colony fills over seasons, not in a week.
- Bare rhizomes left on a path — replant the same day.
If a new patch failed, reset in spring or early fall, shallow, on moist woodland soil rather than digging again in heat.
FAQ
Can I grow it from seed?
Seed is slow and rarely sold. The usual plant-out is a rhizome division in spring or early fall.
Why did the new plants fail?
Usually midsummer digging, a rhizome buried too deep, or dry shade after plant-out. Reset in spring or early fall, shallow, on soil that stays moist.
Related guides
Recommended plants
References
- [1] Wisconsin Horticulture -
https://hort.extension.wisc.edu/articles/false-solomons-seal-maianthemum-racemosum/ - [2] NC State Extension Gardener -
https://plants.ces.ncsu.edu/plants/maianthemum-canadense/ - [3] PlantNative.org -
https://plantnative.org/native-plants/may-lily-maianthemum-canadense.htm - [4] NC State Extension Gardener -
https://plants.ces.ncsu.edu/plants/maianthemum-racemosum/
This note is part of Maianthemum Guides.
More planting notes by plant are gathered in Planting Guides.
Updated: Reviewed by Bosquelle Editors