Common name(s): corkscrew hazel, Harry Lauder's walking stick
Hardiness ratings: USDA zone 4~5 - 8~9
- Wikipedia. Online encyclopedia entry (if defined).
- Google images. Web search for photographs.
- GRIN. Taxonomical details, with common names, distribution, and synonyms.
- The Plant List. Taxonomical lookup
Links for Corylus avellana
- All Things Plants - Community-assembled plant profile (4 varieties in database) (1 photo)
- BBC Gardening - Plant profile with horticultural details and garden uses. (1 photo). Also pages for 'Contorta' and 'Fuscorubra'.
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (5 photos)
- Denver Botanic Gardens: Corylus avellana 'Contorta' - Description, native range, and cultural requirements. (zone 4) (8 photos)
- Floridata - Illustrated informative profile page with notes on culture, usage, and noteworthy features. (zone 4-9) (2 photos)
- Missouri Botanical Garden - Plantfinder page for one of the plants growing at the garden, with usually one or more photos, horticultural information, and noteworthy characteristics. (zone 4-8) (1 photo). Also a page for 'Contorta'.
- North Carolina State University factsheet - Plant profile with horticultural details and comments (zone 4-8) (4 photos)
- Ontario Rock Garden Society - Germination information
- Paghat's Garden: Corylus avellana 'Contorta - Illustrated articles by a gardener in the Pacific Northwest, with background and personal observations. (6 photos)
- Plant Delights Nursery: Corylus avellana 'Contorta' - Catalog page with photo, horticultural basics, and descriptive blurb. (1 photo)
- Rare Find Nursery: Corylus avellana 'Felix' - Catalog detail page with description and horticultural information. (additional pages for other varieties) (zone 5-8) (1 photo)
- Rob's Plants: Corylus avellana 'Contorta' - Plant profile with basic horticultural information and often personal observations. (zone 4-8) (2 photos)
- Virginia Tech Dendrology - Factsheet with botanical characteristics and photos of various features. (6 photos)