Blue Light Clematis
Blue Light Clematis
Fully Double, Powder-Blue Pompon Blooms on a Compact Vine
Blue Light Clematis (Clematis 'Blue Light') opens lavish, fully double flowers in soft powder-blue — each bloom a layered rosette that looks almost like a clematis crossed with a peony. Compact and well-behaved, it's perfect for a container trellis or a smaller support, and it's zone 4 hardy with the usual clematis preference: top in the sun, roots in cool shade. Whether you're dressing a patio obelisk in Edina, climbing a deck rail in Maple Grove, or filling a small trellis in Woodbury — Blue Light brings luxurious blue to zone 4b–5a yards.
Blue Light Clematis Plant Details
| Attribute | Detail |
|---|---|
| Scientific Name | Clematis 'Blue Light' (Vanso) |
| Plant Type | Deciduous flowering climbing vine |
| Mature Height | 6–8 feet (with support) |
| Mature Spread | 2–3 feet |
| Sun | Full sun to part shade (6+ hours for best bloom); keep the roots cool and shaded |
| Water | Moderate — consistent moisture in well-draining soil |
| USDA Zones | 4–9 (Twin Cities is zone 4b–5a) |
| Soil | Rich, well-draining; amend Minnesota clay-loam with compost |
| Pruning Group | Group 2 — light prune in early spring; double flowers come on old wood |
| Bloom | Fully double powder-blue flowers in late spring/early summer, with a lighter rebloom later |
| Winter Hardiness | Reliable to zone 4; mulch the crown the first winter |
Blue Light Clematis Uses in Minnesota Landscapes
Containers and compact supports
Its restrained size makes Blue Light one of the best clematis for a large patio pot with a trellis, or a slim obelisk in a Plymouth border where a vigorous vine would overwhelm.
Trellises and rails
Train it up a deck rail, lattice panel, or doorway trellis. It climbs by twining leaf stems, so give it thin supports to grab.
Cut flowers
The double pompon blooms are unusual and long-lasting in arrangements.
Best Time to Plant Blue Light Clematis in Minnesota
Spring (late April–May) and early fall (late August–September) are both excellent. Avoid summer heat, and never plant after mid-October — frost-heaving kills new roots.
How to Plant Blue Light Clematis
- Site it so the top gets sun but the roots stay cool and shaded — "head in the sun, feet in the shade."
- Dig 2–3× the root ball width and set the plant 2–3 inches deeper than it grew in the pot to guard against clematis wilt.
- Backfill with native soil plus 20–30% compost; firm gently and water in well.
- Install the support at planting and tie young stems to start them climbing.
- Mulch 2–3 inches over the root zone or shade the base with a low perennial; keep mulch off the stems.
Watering Blue Light Clematis in Minnesota
First Year Watering Schedule
- Weeks 1–2: Every 2–3 days, deep and slow
- Month 1–2: Every 3–4 days
- Month 3–6: Weekly; keep evenly moist but never waterlogged
- Stop watering 2–3 weeks before ground freeze (typically late October in the Twin Cities).
After Year One
Water deeply during dry spells, especially in summer heat. Good drainage plus steady moisture keeps the double blooms coming.
Will it bloom double every time?
The fully double flowers form on old (last year's) wood in the first flush. A later rebloom on new wood may be single or semi-double — that's normal for double clematis.
How do I prune Blue Light?
As a Group 2 clematis, prune lightly in early spring — remove only dead or weak stems. Hard pruning sacrifices the double early flowers.
Will it survive a Minnesota winter?
Yes — hardy to zone 4. Mulch the crown the first winter or two; established plants need no protection.
You May Also Like
- Duchess of Edinburgh Clematis — fully double pure-white blooms
- Proteus Clematis — double mauve-pink flowers
- Blue Moon Wisteria — fragrant hardy vine for larger structures