Butterfly Pea Seeds,
Blue Queen

4.220 ReviewsSKU #HB323 · 10 seeds
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Description

(Clitoria ternatea). This top-tier Thai selection produces massive, velvety double blooms in deep indigo blue, absolutely drenching vigorous vines in rich color. The flowers are as useful as they are stunning, long prized for naturally dyeing teas, rice, and desserts. Brew a cup of rich blue tea, then add a splash of lemon and watch it shift instantly to bright pink—pure botanical magic that delights kids and grown-ups alike. Heat-loving and fast-growing, these vines climb trellises with ease, delivering one of the most fun, beautiful, and interactive plants you can grow.

Plant Details

Botanical Name
Clitoria ternatea
Life Cycle
Perennial in zones 10–11, grows as an annual in cooler climates
Growth Habit
Climbing
Sun Requirement
Full sun
Days to Germinate
7–21
Days to Maturity
75–90
Planting Depth
1 in.
Plant Spacing
6–12 in.
Ideal Temperature
70–90°F
Frost Hardy
No

Growing Guide

When to Grow

Start seeds indoors 4-6 weeks before the last spring frost, sowing into deep individual pots so the taproot can be set out with the rootball undisturbed; nicking or soaking the hard seed speeds sprouting, which takes 7-21 days. Or sow Blue Queen butterfly pea seeds outdoors after all danger of frost has passed and soil temperatures consistently remain above 65°F. In warmer regions, it can be planted in early spring; in cooler climates, wait until late spring or early summer. If you’re not sure how to find your first and last frost dates, consult our blog post 'Our Experts Answer Questions, Share Resources.'

How to Sow and Plant

Soaking seeds overnight and nicking or splitting the tough outer seed coat may improve germination. Plant seeds 1 inch deep in fertile, well-drained soil. Space them 6 to 12 inches apart in a sunny location. Provide support early, as vines will quickly seek to climb. Water regularly to keep soil lightly moist until germination.

How to Grow

Provide a sturdy trellis or fence to support vigorous vining growth. Water moderately once established—Blue Queen is drought-tolerant but prefers consistent moisture. Pinch back tips to encourage bushier growth and increased flowering. It does well in containers or directly in garden beds, and blooms more heavily with regular deadheading.

How to Save Seeds

  • Let pods to fully mature and dry on the vine before harvesting
  • Harvest when pods are brown and beginning to crack open
  • Remove seeds from pods and discard any that are moldy or damaged
  • Let seeds air-dry for a week in a shaded, well-ventilated space
  • Store in a labeled paper envelope or glass jar in a cool, dark place

FAQ

Do Blue Queen butterfly pea flowers really change color in tea?

Yes, the vibrant blue petals contain anthocyanins that react to pH changes. When steeped, they produce a vivid blue tea that turns purple with lemon juice or other acids.

Can I grow Blue Queen butterfly pea indoors?

While it prefers outdoor sun, it can be grown indoors in a sunny window or under grow lights. Use a trellis or small obelisk to manage its vining habit and ensure adequate air circulation.

Is Blue Queen butterfly pea attractive to pollinators?

Yes, it is highly attractive to bees and butterflies.

Browse our full range of butterfly pea seeds.

Customer reviews

4.2 / 5 20 Reviews

What gardeners are saying

  • Brilliant deep blue: Vivid blue flowers open fresh every morning once vines get going.

  • Blue tea and more: Dried blooms turn tea, lemonade and rice a vivid blue.

  • Thrives in heat: Shrugs off triple-digit summers and takes off once it is hot.

  • Vigorous climber: Vines cover a trellis or fence fast; give it something sturdy.

  • Heads up: Tricky to germinate; nick and soak seeds, and expect a slow start.