Alder Buckthorn
Rhamnus alnifolia
Rhamnaceae · broadleaf · introduced
Quick Facts
Height
3 ft
Growth Rate
Moderate
Light
Part Shade
Soil
Wet Tolerant
Water
High
Hardiness
Zone Zones 4a–9b
Bloom Time
May 1-May 31
Phenological Calendar
| Stage | Typical Window |
|---|---|
| Bud break BBCH 07 | Feb 15-Mar 15 |
| Leaf emergence BBCH 11 | Mar 1-Apr 1 |
| Bloom start BBCH 61 | May 1-May 31 |
| Bloom end / petal fall BBCH 69 | May 15-Jun 15 |
| Fruit/seed development BBCH 71 | Jun 1-Aug 31 |
| Leaf drop BBCH 93 | Oct 15-Nov 30 |
| Dormancy BBCH 97 | Nov 15-Feb 28 |
Diseases (11)
Armillaria ostoyae Armillaria Root Rot
Brown Leaf Blotch
Canker and Stem Diseases
Catkin Hypertrophy and Leaf Curl
Phytophthora cactorum Collar Rot
Drippy Dieback
Various fungi (Phyllosticta spp., Septoria spp., Cercospo... Leaf Spot
Neonectria ditissima Nectria Canker
Phytophthora spp. (P Phytophthora Root Rot
Podosphaera aphanis var. aphanis Powdery Mildew
Thekopsora minima and Naohidemyces vaccinii Rust