Get the seeds
Visit your local nursery and purchase the best quality Wormwood seeds.
Decide the location
This perennial shrub thrives well in full sun to semi-shade and prefers rich, moist, well draining potting mix. For best germination, use soil with a pH of 5.5 to 7 and mix it with black earth moss.
Sow the Seeds
The best time to plant wormwood is during late winter and late summer months. When planting in late winters, make sure risk of frost has passed. If there is any frost danger, it is recommended to sow the seeds indoors and move them outside once the threat of frost is over. These seeds germinate best when surface-sowed, so scatter the seeds on the surface of the soil, covered with fine seed compost and press them gently into the pot medium, going only about 2mm deep. If sowing directly in the soil, sow the seeds in early spring, after you are sure it wouldn’t frost anymore.
Allow Seeds to Germinate
Place the pot in an area that receives sufficient amount of sun light and do not cover it, since these seeds need light to germinate. Keep the potting medium lightly moist, but not overly wet, during the germination period. Wormwood seeds take 2 to 4 weeks to germinate. This plant needs a lot of room to thrive, so it is necessary to thin once the seedlings sprout.
Transplant or Pot Plants
When the seedlings have their second leaves, transfer them to a larger pot or to the garden, separating them by 20 to 22 inches. If you want to grow wormwood in a pot, plant only one seedling in one pot and keep it in semi shade. These plants tolerate full sun but thrive best when they get direct sunlight just a few hours a day.
Water once a week
Wormwood is a hardy shrub that does not need excessive watering (once a week would be sufficient). However, make sure the soil does not dry out completely between watering, especially during the hot summer months.
Trim your wormwood plant in spring every year to allow fresh, healthy growth. Occasionally cut the dead foliage during winter months, so that the plant can start growing once more after the winter passes.
Harvest this plant after at least two years. Harvesting wormwood one year from sowing is not advisable since the plants are not strong enough to survive harvesting.