6 Blue-Flowering Spring Bulbs to Plant This Fall

Tulips and daffodils dominate the spring bulb palette, covering white through deep purple — but they leave a gaping hole: no true blues. Nature fills it with a suite of lesser-known bulbs in shades of azure, cobalt, indigo, and sky blue. Planted en masse among taller bulbs, under deciduous trees, or scattered in lawns, these blue blooms add a brilliance few other colors can match.

Most are short (a foot or less), and because blue recedes visually, the key is quantity: plant dozens, not handfuls. With one exception, all naturalize readily. The universal rule? “Plant deep — two to three times the bulb’s height,” advises Hans Langeveld of Longfield Gardens. “Deep planting protects from drought, rodents, and extreme cold.” All demand well-drained soil; summer moisture causes rot.

1. Squill (Scilla siberica)

Cheery, early-spring blooms attract butterflies but repel deer, rabbits, and rodents. Excellent in lawns and under trees before leaf-out. Spreads by seed — sometimes too eagerly; check local invasiveness lists.

• Zones: 2–8 (hardy to -50°F)
• Light: Full sun or partial shade
• Height: 8 in.
• Bloom: Early spring
• Plant: 3–4 in. deep; ~20 bulbs/sq ft

2. Reticulated Iris (Iris reticulata)

Tiny, fragrant jewels that bloom when it’s still too cold for tall bearded irises. Their flaw: best show is year one; rebloom can take years. For consistency, plant new bulbs each fall.

• Zones: 5–8 (hardy to -20°F)
• Light: Full sun to partial shade
• Height: 4–6 in.
• Bloom: Late winter to early spring
• Plant: 3–4 in. deep; needs dry summer soil

3. Bluebells (Hyacinthoides spp.)

Taller (8–16 in.) and wilder than hyacinths. English bluebells (H. non-scripta) are scented with nodding flowers; Spanish bluebells (H. hispanica) are unscented with upright blooms. Both self-seed.

• Zones: 4–9 (hardy to -30°F)
• Light: Full sun or partial shade
• Height: English 8–16 in.; Spanish 16 in.
• Bloom: Mid- to late spring
• Plant: 3 in. deep

4. Grape Hyacinth (Muscari spp.)

Clusters of grape-like flowers on bright green stems — one of the longest-blooming spring bulbs. Colors range from white to deep cobalt. Easy in containers, borders, lawns. Spreads when happy; divide dense clumps in autumn or early summer. Fall foliage (no flowers) is normal.

• Zones: 4–8 (hardy to -30°F)
• Light: Full sun
• Height: 8 in.
• Bloom: Mid-spring
• Plant: 4 in. deep; tolerates clay

5. Glory of the Snow (Chionodoxa forbesii)

Star-shaped flowers that bloom cheerfully through snow — among the easiest bulbs. Ideal under shrubs, in rock gardens, or by the hundreds in lawns.

• Zones: 3–9 (hardy to -40°F)
• Light: Full sun
• Height: 4–8 in.
• Bloom: Late winter to early spring
• Plant: 3 in. deep

6. Anemone De Caen ‘Mr Fokker’ (Anemone coronaria)

“The most intense blue you’ll find,” says Langeveld. Planting time depends on zone: fall in zones 7–10; spring (after thaw) in zones 3–6. Does not naturalize.

• Zones: 3–10 (hardy to -40°F)
• Light: Full sun
• Height: 12–18 in.
• Bloom: Mid-spring
• Plant: Soak bulbs 12 hrs in room-temp water; plant 2–3 in. deep

Plant these now, and next spring your garden will sing in shades of blue that tulips and daffodils simply can’t deliver.