Lobularia (hybrid) 'Snow Princess'
‘Snow Princess’ is a vigorous hybrid Lobularia grown for nonstop white bloom and heat tolerance. Plants form spreading mounds that can trail from baskets or spill over walls. Flowers are intensely fragrant and attract pollinators all season in many climates. This selection performs through summer better than typical seed alyssum in warm regions. It is vegetative and usually sold as plants rather than seed.
At‑a‑glance
- Group/Class: hybrid Lobularia (vegetative)
- Height × spread: 12 to 24 in (30 to 60 cm) × 24 to 36 in (60 to 90 cm)
- Bloom window: late spring to frost
- Color & flower form: white; abundant clusters of tiny four‑petaled flowers
- Fragrance: 3 strong
- USDA hardiness: perennial in zones 10 to 11; grown as annual elsewhere
- Breeder / Year / Origin: unknown
- Awards/registration: Missouri Botanical Garden Plant of Merit
- Pet safety: safe
How it differs
- Hybrid vigor gives larger plants and wider spread than typical sweet alyssum.
- Better performance in summer heat compared with most seed strains.
- Trailing habit suits baskets, walls, and large containers.
- Vegetative cultivar that is usually sterile and not grown from seed.
Strengths
- Long bloom from spring to frost in many regions.
- Strong fragrance and pollinator value.
- Recognized Plant of Merit status.
- Heat tolerance relative to standard alyssum.
Care in one minute
- Plant in full sun with afternoon shade where summers are hot.
- Use well‑drained soil and keep evenly moist during hot spells.
- Feed lightly at planting and again midseason in containers.
- Trim back when growth gets leggy to renew bloom.
- Overwinter only in frost‑free zones 10 to 11 or treat as annual.
Watch‑outs
- Needs space to spread in beds and large containers.
- Can slow in extreme heat without regular water.
- May self‑seed less than seed strains due to sterility but monitor as climates vary.
Best uses (tags)
containers; hanging baskets; borders; pollinators; heat‑tolerant
Provenance note
‘Snow Princess’ is a hybrid between *Lobularia canariensis* and *L. maritima* noted by university sources and listed by the Missouri Botanical Garden as a Plant of Merit.
References
- Missouri Botanical Garden – Lobularia ‘Snow Princess’ profile
- NC State Extension – ‘Snow Princess’ hybrid listing
- ASPCA – Alyssum non‑toxic listing
Written by: Your Flowers Guide editorial team
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