in bloom
now
through Aug
Bloom calendar
Sentimental Blue
dwarf selection
At‑a‑glance
- Group/Class: dwarf selection
- Height × spread: 10-12 in (25-30 cm) × 10-12 in (25-30 cm)
- Bloom window: early July to early September
- Color & flower form: blue; single, star-shaped
- Fragrance: 0 none
- USDA hardiness: zones 3-8
- Breeder / Year / Origin: unknown
- Cut-flower notes: very short stems; best for small vessels; sear cut ends to prevent sap bleed
- Pet safety: unknown
How it differs
- Much shorter than typical balloon flower.
- Dense, mounded habit for tight spaces.
- Less likely to need staking.
- Flowers heavily for its size.
Strengths
- Reliable dwarf habit for edging and pots.
- Long bloom season with deadheading.
- Cold hardy in northern regions.
- Low maintenance in average soils.
Care in one minute
Light: full sun to light shade.
Soil: fertile, well-drained; slightly acidic to neutral.
Water: consistent moisture; avoid saturated conditions.
Feeding: light spring feeding only.
Grooming: deadhead; optional light trim in late spring to maintain shape.
Winter: mulch lightly; avoid disturbing crowns.
Watch‑outs
- Can stretch in shade.
- Dislikes frequent division or transplanting.
- Shoots emerge late; mark the site to avoid damage.
Best uses (tags)
Provenance note
Evaluated as a compact cultivar in public trials, where plants averaged about 12 inches tall.
References
- Chicago Botanic Garden – Platycodon cultivar trial (Sentimental Blue performance)
- NC State Extension – Platycodon grandiflorus profile
- Missouri Botanical Garden – Platycodon grandiflorus (Plant Finder)
