Artemisia Longifolia, which is also known as Long-leaved Sage and Long-Leaf Wormwood, is a perennial sub shrub. This perennial can grow up to a height of 20-80cm. It belongs to the family Asteraceae. This plant is pleasantly aromatic. The root system is fibrous root system and stems are erect and gray-green in color. The leaves are cauline and bicoloured in white and green. The leaf blades are linear to lanceolate. The margins are toothed or lobed. The flower heads are in form of arrays and florets are bisexual with pale yellow corollas. It flowers from mid summer–early fall.
This perennial is native to North America north of Mexico. It needs well drained soil and prefers light (sandy), medium (loamy) and heavy (clay) soils. This perennial needs full sun and cannot grow in shade. The soil needs to be moist to dry.
The flowers are hermaphrodite in nature.
This shrub is used as food for livestock as it is known to be high in protein. Medically, it is used to treat intestinal worms and stomach problems. A decoction made out of their leaves is given to such patients for treatment.
Growing conditions/Care for Artemisia Longfolia:
• Plant in a sunny location.
• It grows in zones of USDA of 3 and -30° F temperature.
• If sowing the seeds, sow in moist sterile soil and cover with fine sand and peat moss.
• Avoid alkaline soil for this shrub.
• This herb can also be propagated by cuttings.
• Use 3-4 inches long cuttings.
• Rooting should take place in about 4-8 weeks.
• Remove the lower leaves and on the upper side about half of leaves so that the transpiration is reduced.
• This Wormwood needs full sun to partial shade.
• Dig a hole of 6 to 8 inches to plant.
• Add 2-4 inches of compost or manure to the planting soil.
• The plant’s root ball should fit the hole.
• Keep the soil moist and for good growth water occasionally especially in hot and dry weather.
• Fertilize this wormwood using liquid or general fertilizer every spring.
• Mulch the plant around to about 2-3 inches.
• Prune the shrub periodically for encouraging new growth.
• This Wormwood can tolerate poor soil.
• Maintain high humidity to ensure proper rooting.
• This Wormwood is not affected by many diseases or pests.
• Do not keep the plant wet or soggy as it develops root rot.
• Use a well-drained medium like that of 3 parts perlite to 1 part vermiculite or a mix of 1 part potting mix to 2 or 3 parts perlite.