Shrubs
Forsythia × intermedia 'Karl Sax' (Border Forsythia)
Forsythia x intermedia 'Karl Sax'
Also known as Karl Sax Forsythia
Size
Available at our Langlois nursery
Call or text to confirm stock before visiting.
Currently out of stock
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We don't ship plants. Local delivery options are available.
About This Plant
Forsythia × intermedia 'Karl Sax' (Border Forsythia), 'Karl Sax', is valued for its garden character and seasonal interest in PNW landscapes.
Forsythias are the iconic harbinger of spring , bare branches covered with bright yellow flowers in late winter or very early spring, before leaves emerge. Tough and adaptable.
Full sun to part shade suits this species. Plant in well-drained; tolerates a range soil. Hardy USDA Zone 4 to 8. Prune just after flowering to maintain shape and bloom. Generally trouble-free.
For a Pacific Northwest native shrub of similar character, consider Mahonia aquifolium (Tall Oregon Grape, Oregon state flower), Philadelphus lewisii (Mock Orange), or Holodiscus discolor (Oceanspray) , all support native pollinators and birds.
Plant Details
- Botanical
- Forsythia x intermedia 'Karl Sax'
- Common name
- Karl Sax Forsythia
- Lifecycle
- Perennial
- Foliage type
- Deciduous
- Mature size
- 6-8 ft tall × 6-8 ft wide
- Growth rate
- Moderate
- Bloom time
- Spring to summer
- Bloom color
- Yellow
- Foliage color
- Green
Care Notes
Garden Attributes
- Pacific NW native
- Deer resistant
- Coastal suitable
- Grown organically
- Pollinator value: Bees, Bumblebees
- Wildlife: Pollinator support
Not sure if it's in stock?
Our inventory changes with the seasons. Before you drive out, give us a call or text, we'll confirm availability and can hold a plant for you.