Category Archives: Horticulture Reports

Horticulture Report

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Kalmia microphylla_Mountain LaurelPlant Name: Kalmia microphylla
(Note: The kalmias are very poisonous!)

Common name: Alpine laurel, Bog Laurel, Swamp-laurel, Western bog-laurel
Plant type: Dwarf Shrub
Height:   6-24 inches
Bloom Time: May – September
Flower Color: Pink to Rose Purple
Exposure: Sun to part shade
Soil Requirements: Moist, humus, acidic soil, low nitrogen
Water Needs: Average to Wet
Attributes: Native, Alpine
Habitat: Forested Meadows, Subalpine, Alpine, Wetlands
USDA Zone: 2-8

Horticulture Report: Verbascum

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Southern Charm

Plant Name: Verbascum (mullein hybrid)
Cultivar: Southern Charm
Plant type: Perennial
Height: 2 ft
Bloom Time:Late Spring to Mid-Summer (then again in the fall)
Flower Color: Pastel Rose to Ivory
Exposure:Full Sun
Soil Requirements: Normal to Sandy
Water Needs: Drought tolerant once established
Attributes: Large 1.5” showy flowers, deer resistant, two bloom times , Silvery Foliage
Note: Does not self-sow
Uses: Cutting garden, Perennial Garden
USDA Zone: 5-9

Horticuture Report: Helleborus

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Plant Name: Helleborus orientalis ( Lenten rose)
Plant type: Perennial
Height:   12” – 15”
Bloom Time: February to April
Flower Color: Varies – Purple, Whitish Yellow, Whitish Green, Pink, Burgundy
Exposure: Full Sun in Winter, Partial Shade Rest of the Year
Soil Requirements: Well Drained Soil
Water Needs: Medium
Attributes: Early Bloomer, Deer Resistant , Waterwise plant, Long Bloom Season
Note: Mulch to maintain summer moisture
Uses: Borders, Containers, Mass Plantings, Woodland Garden
USDA Zone: 2-10

Horticulture Report: Oakleaf Hygrangea

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Plant Name: Hydrangea quercifolia Hydrangea_quercifolia_ Oakleaf
Common Name : Oakleaf Hydrangea
Cultivar: Ice Crystal
Plant type: Deciduous Shrub
Height:   3-6 Ft tall – 3-6 Ft wide
Bloom Time: Summer to Fall
Flower Color: Creamy White aging to Pink (clusters of conical shaped flower heads)
Exposure: Sun to Part Shade
Soil Requirements: Acid soil, Excellent Drainage
Water Needs: Low to Moderate ( prefers drier soil after established)
Attributes: Showy Flowers, Interesting Leaves that turn red in Autumn, USA Native, Compact Mounding Shrub, Papery Bark, Multi-Stemmed, Fragrant Flowers.
Note: Will not tolerate “wet feet”. Plant will get root rot very fast if left in soggy soil!
Uses: Woodland Plant, Borders, Group Plantings
USDA Zone: 5-9 ( hardy to -20 F)

By Carlotta Lucas

Horticulture Report: Physocarpus capitatus (Pacific Ninebark)

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Plant Name: Physocarpus capitatus
Cultivar: Pacific Ninebark
Plant type: Deciduous shrubs
Height: 6ft to 15 ft (depends on the amount of sun it gets)
Bloom Time: May- June
Flower Color: White dome-shaped flowers
Exposure: Sun Sun or Shade ( it grows along stream banks)
Soil Requirements: Humus rich soil
Water Needs: Moist to wet
Attributes: NW native plant, Attracts bees & butterflies, Showy flowers, Seeds for birds
Notes: No Pests
Uses: Permaculture landscaping, Winter Interest (bark & seeds), Erosion control
USDA Zone: 4-10

Horticulture Report: Clerodendrum Trichotomum

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Plant Name: Clerodendrum TrichotomumClerodendronTrichotomum
Common Name: Harlequin Glorybower
Plant type:  Deciduous Shrub or Small Tree
Height:   10 ft – 20 ft
Bloom Time:  July to September
Flower Color: White, Jasmine-like Tubular Flowers
Exposure:  Full Sun to Part Shade
(hardy but needs some protection)
Soil Requirements: Rich Well-Drained Soil
Water Needs:  Average, do not over water
Attributes:  Unique Leaf Aroma smells like Peanut Butter, Fragrant Tubular Flowers, Showy Iridescent Blue Fruit Surrounded by a Fleshy Red Calyxclerodendrum_trichotomum
Note: Seeds & parts of plant are poisonous if ingested, Handling plant may cause skin irritation or allergic reaction.
Uses: Hedges, Showy Ornamental,  Late Summer Flowers, Summer Interest
USDA Zone: 7a-9b