in bloom
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Nepeta grandiflora
species catmint
At‑a‑glance
- Group/Class: species catmint
- Height × spread: 24 to 30 in × 20 to 40 in (60 to 75 cm × 50 to 100 cm)
- Bloom window: June to July; repeats with deadheading
- Color & flower form: light purple blue flower spikes with larger florets
- Fragrance: 2 noticeable
- USDA hardiness: unknown / varies by climate
- Breeder / Year / Origin: unknown, Caucasus
- Pet safety: sources differ; see References
How it differs
- Larger individual flowers than many catmints.
- Upright stems with a looser, open habit.
- Main bloom is early summer rather than late spring.
- Best performance where summers are not excessively humid.
Strengths
- Showy flower size for mid border placements.
- Good pollinator support.
- Responds to deadheading with repeat bloom.
Care in one minute
Grow in full sun with well drained soil.
Water to establish; then water deeply but infrequently.
Deadhead after the first wave to encourage repeat bloom.
Cut back low in late fall or very early spring to renew growth.
Watch‑outs
- Can open up or relax on rich soils.
- Repeat bloom depends on timely deadheading.
- Avoid poorly drained sites.
Best uses (tags)
Provenance note
A Caucasus species selected for gardens for its larger flowers and upright habit.
References
- RHS – Nepeta grandiflora
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