Issai-naga Japanese Wisteria is a hardy climbing vine known for its cascading fragrant flower chains on a powerful woody vine. Issai-naga Japanese Wisteria flowers in late spring in shades of purple, and performs best in full sun with moderate watering once established. This vine matures to roughly 20-30 feet tall and 6-10 feet wide. It is ideal for pergolas, arbours, trellises, and fences, adding vertical interest, offering vertical interest and fast seasonal cover. Once established it needs little attention, making Issai-naga Japanese Wisteria a dependable choice for Canadian gardens. A layer of mulch helps hold moisture and keeps roots cool in summer.
Mature height: 20-30 feet
Mature width: 6-10 feet
Bloom: Purple, late spring
Light: Full Sun
Water: Moderate — about 2.5 cm of water per week in the growing season
Hardiness: Zone 4-9
Maintenance: Medium maintenance
Pruning: Prune in early spring to control size and direct growth on its support.
🪴 Planting Instructions: Dig a hole slightly wider than the pot, keeping the top of the root ball level with the surrounding soil. Loosen circling roots before planting, backfill with native soil amended with compost, then water thoroughly to settle. Space plants about 6-10 feet apart and keep well watered through the first full season while roots establish. Plant in full sun.
💧 Care & Watering: Water moderate: about 2.5 cm of water per week in the growing season. Mulch to conserve moisture and moderate soil temperature, and feed with a balanced slow-release fertilizer in early spring. Prune in early spring to control size and direct growth on its support.
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