How to Grow Sedum From Seed

Fill a seed-starting tray with a soil-less potting mixture and water until evenly moist but not soggy. Soil-less mixes are disease-free and drain well enough that roots will not rot.

Sow the seeds as thinly as possible on the soil surface. Sedum seeds resemble a fine dust so over-sowing is unavoidable. Cover seeds with a light sprinkling of the potting mix.

Place the seed tray on a germination heat mat that has been set to between 85 and 95 F.

Place the mat and tray under grow lights that are positioned 4 inches above the top of the tray and leave them on for 16 hours a day.

Keep the soil moist at all times by misting it with a spray bottle if it starts to dry out until seeds germinate, which may take up to 30 days. Once germinated, keep the soil moist via overhead watering or by setting the pot in a shallow dish of water and allowing it to absorb moisture until the soil surface is moist.

Transplant to individual pots when the sedum produces its second set of leaves, usually within three weeks of germination. Fill 6-inch pots with moistened potting mix. Use the same soil-less mix used for germination to avoid transplant shock. Lift the sedum seedlings from the tray by their leaves and plant into individual pots. Transplant into smaller pots if desired, though this will entail further transplanting as the plant grows and may lead to root damage.

Place sedum in a warm room where it will receive full sunlight for eight hours a day or place it under grow lights for 16 hours. Keep the soil moist at all times.

Transplant into a well-drained, full-sun garden bed that is not overly fertile. Water as necessary to keep soil moist but not soggy. Sedum tolerate mild drying between waterings once established.