Details of...
Scientific Name: Forsythia x intermedia cvs.
Pronunciation: for-SYE-thee-uh ex in-tur-MEE-dee-uh
Common Name: showy forsythia
Family Name: Oleaceae
Plant Type: Flowering cut plant, Shrub - deciduous
Key ID Features: Shrub dense; leaves opposite, ovate to lance-shape, serrate; flowers deep bright yellow, March; fruit small brown capsules. Winter ID: buds greenish divergent; lenticels bumpy on older stems/trunks; young stems yellow-green before maturing to orange/brown.
Course(s): AARB 1012, HORT 1155, Level 1 Apprenticeship

Habit: Arching, Stiffly upright
Form: Irregular, Vase
Texture: Medium - fine
Mature Size:
Height:2 - 3m
Spread:3 - 4m
Growth Rate:Fast
Origin: Garden origin (F. suspensa x F. viridissima)
Hardiness Rating: Zone 5: (-29 to -23 C)
Exposure: Filtered shade, Full sun
Soil/ Growing Medium: Well-drained
Water Use: Low
Landscape Uses: Cut flower or foliage, Group or mass planting, Mixed shrub border, Sheared hedge, Spring interest, Tall background
Additional Info: Google. Cultivars shown or on campus include F. 'Lynwood'.
showy forsythia
Leaf Morphology: Glossary
Form: Simple
Arrangement: Opposite
Texture/ Venation: Pinnate venation, Soft flexible
Surfaces: Glabrous
Leaf(let) Terms:
Shapes: Lanceolate, Ovate
Apices: Acute
Bases: Cuneate
Margins: Serrate

Inflorescence Type: Floriferous, Flowers solitary
Flower Morphology:Flowers perfect
Number of Petals:4
Corolla Shape:Salverform
Ovary Position:Superior
Colour (petals): Showy, Yellow
Flower Scent: Fragrant
Flower Time at Peak: Mar, Apr
Additional Info: One of the most noticeable spring flowering shrubs. Flower buds less hardy than rest of plant.

Fruit Type: Capsule
Fruit Colour: Brown
Fruiting Time: Sep, Oct
Additional Info: Fruit insignificant
Bark Morphology: Prominent lenticels, Multi-stem trunk
Bark or Stem Colour: Brown
Leaf Bud Type: Superposed

Propagation: Greenwood cuttings, Softwood cuttings, Hardwood cuttings, Layering
Plant Care:
Other:needs frequest pruning
Pest Susceptibility: Bacterial leaf spot, Dieback, Fungal leaf spot, Galls, Nematodes, Root rot, Virus, ( Deer resistant )
(ONW) Overpass North side West : 810 cv. ‘Lynwood’
(WDH) Wark-Dumais House : 195
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