Rhododendron catawbiense ‘Boursalt’

(Boursault Catawba Rhododendron)



Hardiness Zones:

 4a  4b  5a  5b  6a  6b  7a  7b  8a  8b

Quick Overview:

‘Boursault’ is a dense, upright, evergreen rhododendron. It has violet buds that open into lavender flowers with some reddish or pale brown spots. It will grow 6 feet tall in 10 years but eventually can grow to 10-15 feet tall.

Description

Best grown in acidic, humusy, organically rich, medium moisture, moisture-retentive but well-drained soils in part shade to full shade. Prefers a sun dappled shade. Plant in a location protected from strong winter winds. Good soil drainage is essential (doesn’t like “wet feet”). Poor drainage inevitably leads to root rot, therefore raised beds/plantings should be considered in heavy clay soils. Shallow, fibrous root systems (do not cultivate around plants) will benefit greatly from a mulch (e.g., wood chips, bark or pine needles) to help retain moisture and stabilize soil temperatures. Roots must never be allowed to dry out. Acidify soils as needed. Clip off spent flower clusters immediately after bloom as practicable.

Additional information

Common Name

Boursault Catawba Rhododendron

Botanical Name

Rhododendron catawbiense 'Boursault'

Container/Amount

20 gallon

Evergreen or Deciduous

Evergreen

Hardiness Zone

4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b

Growth Rate

Average

Light Requirements

Part-shade, Part-sun, Shade

Height

6-10'

Width

6-10'

Soil Condition

Well-drained

Water Needs

Average

Blooming Period

mid spring

Flower Color

lavander/purple

Fragrance

Yes

Foliage Color

green

Deer Resistant

Yes

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