Yellow Monkshood Seeds (Aconitum) | Wolfsbane Perennial

Add upright flower spikes and finely divided foliage to an ornamental border with yellow monkshood, also known as aconite or wolfsbane. This Aconitum perennial bears soft yellow to creamy-yellow flowers, creating a distinctive accent among leafy garden plants.

Important Safety Warning

All parts of Aconitum, including seeds, are highly poisonous. Do not ingest. Avoid skin contact and wear protective gloves when handling seeds or plants. Keep away from children and pets. Do not plant near edible crops or anywhere the plant could be mistaken for an edible herb. For ornamental use only.

Plant Highlights

• Plant type: Upright flowering perennial.
• Flowers: Yellow to creamy-yellow spikes, with flowering generally in summer and potentially extending into early fall.
• Foliage: Deeply cut green leaves that provide texture in mixed borders.
• Listed height: Approximately 36–48 inches at maturity; actual size varies with conditions.
• Support: Stake stems if needed, especially in exposed locations.

Growing Site & Care

• Choose full sun in cool-summer conditions or partial shade with protection from hot afternoon sun.
• Provide well-drained soil that stays evenly moist. Avoid sites that dry out or compete with thirsty tree roots.
• Space established plants approximately 24–30 inches apart.
• Water as needed to maintain consistent moisture without waterlogging.
• Established clumps may be divided in early spring every 3–4 years. Wear gloves whenever handling plants.

Starting from Seed

Monkshood seeds benefit from a cold period before germination. Sow outdoors in late fall or early winter in a clearly labeled, protected location so seeds experience seasonal cold before spring growth.

For indoor starting, use a moist cold-stratification approach appropriate to the seed lot before sowing in starter trays. Cover seeds lightly and keep the medium moist, not saturated. Germination can be uneven, so allow extra time rather than relying on a fixed emergence date. Gradually acclimate seedlings to outdoor conditions before transplanting.

Packet Options

Choose a 10-seed or 25-seed packet from the available options. This listing is for seeds, not live plants. Flower color is yellow; packet options select seed quantity, not color.