Arroyo Lupine Seeds – Lupinus succulentus Annual Wildflower

Purple Flower Spikes for a Natural Garden Display

Bring a touch of California wildflower charm to your garden with Arroyo lupine (Lupinus succulentus), also known as succulent lupine or hollowleaf annual lupine. This annual produces upright purple flower spikes above bushy, branching plants with distinctive clusters of leaflets.

Plant a sunny patch among other wildflowers for a relaxed meadow-style display, or use it in a mixed border where its upright blooms can add contrast. Flowering follows the growing season and varies with local climate and sowing time.

Available Packet Sizes

• Small packet: 20 seeds
• Packet: 100 seeds
• 1 oz pack
• 4 oz pack

Select your preferred size when ordering. Weight-based packs are sold by weight, not a guaranteed seed count.

Plant Highlights

• Botanical name: Lupinus succulentus
• Common names: Arroyo lupine, succulent lupine, hollowleaf annual lupine
• Life cycle: Annual, not perennial
• Flower color: Purple
• Habit: Bushy, branching growth with upright flower spikes
• Light: Full sun
• Soil: Well-drained soil; avoid persistently waterlogged conditions
• Suggested uses: Wildflower plantings, sunny borders, and cut flowers

Sowing and Establishment

Direct sowing helps minimize disturbance to lupine roots. Prepare a weed-free seedbed with good drainage. In mild-winter climates, fall sowing can take advantage of cool-season moisture; in colder climates, sow in spring when conditions are suitable.

The hard seed coat can slow germination. Gently rubbing a small area of the coat with sandpaper before sowing can help water enter the seed; avoid damaging the inner seed. Do not use boiling water.

• Sowing depth: Approximately 1/2 inch
• Moisture: Keep the seedbed lightly and evenly moist until seedlings establish
• Spacing: Thin seedlings to approximately 12–15 inches apart, allowing room for branching

If starting indoors, use individual deep pots and transplant young seedlings carefully. Germination speed and mature plant size vary with conditions.

Growing Care

Water young plants regularly while their roots establish, allowing excess water to drain. Adjust watering to rainfall and soil moisture rather than following a fixed schedule. Remove faded flower spikes for a tidy display and to reduce unwanted self-seeding.

Cut Flowers

Cut spikes when the lower blossoms begin opening. Place promptly in clean water and remove foliage that would sit below the waterline.

Important: Ornamental Only

Do not eat these seeds or plants. Ornamental lupines can be toxic if ingested. Keep seeds and plants away from children and pets.