Zone 5 · False Indigo
Planting False Indigo in Zone 5
Baptisia australis
✅ False Indigo thrives in zone 5 (hardy 3–9)
Can I plant today?
⏳ Too early to direct-sow
Last frost is in 4 weeks. Wait until soil warms.
Evaluated for April 27, 2026 ·
Zone's last frost
around May 15
Zone's first frost
around October 15
Bloom window
May – June
Peak bloom
May
Sun required
full sun
Mature height
48"
Spacing
36" apart
Type
perennial
How to plant False Indigo in zone 5
Plant in spring — deep taproot means don't move once established. Long-lived and drought-tolerant.
Pair with these for continuous bloom
False Indigo peaks in May. These companions keep your bed in color before and after.
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