Wood Poppy From Seed – Sow When Capsules Split

Grow wood poppy from seed by sowing the seed as soon as the bristly capsule splits, and never letting that seed dry out. Sow it in moist mix, then leave the pot through winter cold before you expect seedlings.

Sow the seed as soon as the capsule splits, and never let it dry

Wood poppy is straightforward from seed if the seed is fresh. Watch the bristly, nodding capsule in summer. When it splits and the seeds inside are dark, collect them and sow the same day. Each seed has a pale oily ridge that ants carry off, so bag the capsule if you want the seed yourself. [1] If the seed dries, it often never comes up. Press it into a moist, humus-rich mix, cover it about one-quarter inch, and keep that mix just moist. Sow outdoors in fall, or leave a pot in shade through winter. Seedlings show in spring. [2] See How to Grow Wood Poppy for the grown plant. The plant also self-sows in a moist bed; pull extras if the colony gets thick. Do not collect seed from wild stands; use a garden plant or a nursery packet. [3]

1. Watch the bristly capsule in summer, and collect the seed as soon as it splits and the seeds are dark, or bag the pod so ants do not take it.
2. Sow it the same day on moist mix, press it in, and cover it about one-quarter inch.
3. Keep the mix just moist in shade, and leave the pot out through winter cold, or sow in place in fall.
4. Wait for seedlings in spring, then grow them on. Some bloom the first year; many wait until the next.

Divide a spring clump, with a growing point on each piece

If you already have a garden clump, you can split it in spring instead of waiting on seed. Wear gloves. The plant grows from a woody caudex with coarse roots, so lift a mature clump and tease or cut it so each piece has a growing point and some roots. [4] Replant the same day, at the same depth, in moist shade, about a foot apart. Water it in, and mulch with leaves. A moved piece may sit still for a season. Do not divide a small plant, and do not dig wood poppy from the woods.

1. Wait until spring, on a clump that can spare a piece, and wear gloves.
2. Lift the crown and split it so each piece has at least one growing point and some roots.
3. Replant at once, at the same depth, in a shady, moist, humus-rich bed, about a foot apart.
4. Water it in, mulch with leaves, and leave it alone while it settles.

If the seed never comes up, it probably dried out, or the pot missed winter cold. Next time sow it the day the capsule splits and keep that mix moist.