Zone 5 · Edging Lobelia
Planting Edging Lobelia in Zone 5
Lobelia erinus
✅ Edging Lobelia thrives in zone 5 (hardy 2–11)
Can I plant today?
✅ Start Edging Lobelia indoors now
You're 4 weeks from last frost. Transplant after last frost. Likes cool roots — mulch heavily. May rest midsummer in heat.
Evaluated for April 27, 2026 ·
Zone's last frost
around May 15
Zone's first frost
around October 15
Bloom window
May – September
Peak bloom
June
Sun required
part sun
Mature height
8"
Spacing
8" apart
Type
annual
How to plant Edging Lobelia in zone 5
Transplant after last frost. Likes cool roots — mulch heavily. May rest midsummer in heat.
💡 In zone 5, start seeds indoors around February — about 10 weeks before your last frost.
Pair with these for continuous bloom
Edging Lobelia peaks in June. These companions keep your bed in color before and after.
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