Horticulture Report: Helichrysum petiolare

Plant Name:  Helichrysum petiolarelicorice-plant1.jpg
Common name:  Licorice plant
Plant type: Annual
(Tender Perennial Zones 9-11)

Height: 6-9 inches
Spread: 1-3 ft
Bloom: White, but Insignificant
Exposure: Full Sun – Part Shade
Soil Requirements:  Average
Water Needs: Dry to medium
Attributes:   Dense trailing silvery leaves, Tolerates poor soil & drought
Notes: Good drainage is a must!
Uses:  Annual, Hanging Baskets, Containers, Rock walls, Annual ground-cover
Native to: Southern Africa
USDA Hardiness Zone: 9-11

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Horticulture Report: Cotoneaster salicifolius

Plant Name:  Cotoneaster salicifolius


Common name:  Willow-leaf cotoneaster
Plant type: Broadleaf  Evergreen shrub
Height:  6-8 ft
Width:   6-10 ft
Bloom Time:  May
Flower Color:  Small White
Exposure: Full Sun to Part Shade
Soil Requirements: Well-drained Sandy Loam
Water Needs: Average, tolerates drought       
Attributes:  Non-edible Showy Red Berries in Winter, Arching Habit with open branches, Bird-friendly. 
Uses:  Border, Specimen, Background plant, Bank Cover, Group/Mass Plantings, Hedge, Year-round Interest.
Note: In hot areas part sun is best.
Native to: Western China & Northern India  
USDA Hardiness Zone: 6-8

Low-growing varieties:

Cotoneaster salicifolius ‘Repens’:  Low-growing form. Can use as a groundcover. Covered in red pomes fruits in the fall.  Semi-evergreen in severe winter areas. ‘Green Carpet’ is very similar in habit.

Cotoneaster salicifolius ‘Scarlet Leader’ – Prostrate form creates a mat-like low ground cover only 2-3′ tall but spreads 8- 10′. Foliage is glossy & disease-free. Leaves can have purple hue in winter.  Produces abundant scarlet berries in the winter.

Drumstick Allium

Plant Name:  Allium sphaerocephalonAllium_Drumstick
Common name:  Persian Onion or Drumstick Allium
Plant type:  Bulb
Height:  20-24 inches
Bloom Time:  May-June
Flower Color:  Reddish-Purple
Exposure:  Full Sun- Part Sun
Soil Requirements: Well-drained fertile sandy soil
Water Needs:  Average
Attributes:   Colorful Fragrant Flowers, Interesting egg-shaped flower,  Attracts Pollinators, Easy to grow, Deer resistant , Squirrel & Rabbit resistant.
Uses:  Cut flower, Dried Flower,  Perennial Garden, Mass plantings, Garden Interest
USDA Hardiness Zone:  5-8

Winterberry Holly

Plant Name: Ilex verticillatawinterberry_Ilex verticillata
Common Name: Winterberry Holly
Plant type: Deciduous shrub
Height: 3-12 ft – depending on varieties  
Spread:  Same information as height
Bloom Time:  Early  summer
Flower Color:  White, or cream  – small
Exposure:  Full sun to partial shade
Soil Requirements: Rich organic acidic soil, but grows in average garden soil.
Water Needs:  Moist boggy areas
Native to: Eastern North America
USDA Hardiness Zone: 3-9

Attributes: Vibrant Red Winter Berries, Important food source for American Robins, Winter Interest.

Uses:  Wetland habitats, Native gardens, Bird habitat, Rain garden, Firewise garden, Wildlife gardens, Cutting garden, Containers dwarf varieties, Floral arrangements.

Note:  Plants are dioecious meaning male or female.  A male plant is needed for female plants to produce berries.  Plant a male shrub within 50 feet of female plants. One male plant can pollinate 6-10  female plants, but note blooming time must match when female’s bloom.  Slow growers.  Shrubs can sucker out into a dense thicket when planted in wet boggy areas.

A few varieties are listed below:

            Berry Heavy:  6-8 ft  (female)
            Berry Nice:   6-8 ft     (female)
            Sparkleberry:  5-8 ft  (female)
            Southern Gentleman: 12 ft  (male)
            Apollo: 6-10 ft (male)
            Raritan Chief:  7 ft T X 12 ft W (male)
            Jim Dandy:  6-10 ft  (male)

Dwarf varieties:

            Afterglow:  3-6 ft  (female)
            Little Goblin: 3-5 ft (female)
            Little Goblin Guy: 3-5 ft (male)
            Red Sprite:  3-5 ft  (female)
            Berry Poppins:  3-4 ft (female)
Mr. Poppins: 3-4 ft  (male)

by: Carlotta Lucas

Horticulture Report: Ginkgo biloba ‘Marieken’

Plant Name: Ginkgo biloba -‘Marieken’ginkgo-biloba-mariken.jpg
Common Name: Maidenhair Tree – Dwarf
Plant type: Deciduous Conifer
Height: 2-3 feet
Spread:   2-6 feet
Foliage: Green
Golden Yellow in the Fall)
Bloom: April
Flowers:  Insignificant
Exposure:  Full Sun -Part Shade
Soil Requirements: Prefers average well-drained soil but tolerates clay
Water Needs: Medium, even moisture needed
Attributes:   Scalloped Leaves, Fall Color, Dwarf Tree,
Low-Spreading, Male Tree(fruitless), Cascading
Note: Tolerates Deer, Clay Soil, Air Pollution, Saline Conditions & Heat
Uses: Container Plant, Patio Plant, Small garden areas, Bonsai, Rock Garden
Native to: Cultivar originated as witch’s broom found in 1995 by Piet Vergeldt in Kronenburger Park, Nijmegen, The Netherlands.
USDA Hardiness Zone: 3a-10b

Available at Portland Nursery, Portland Oregon