Hypericum kalmianum 'Blues Festival'

St. John's-Wort 'Blues Festival'

Family: Hypericaceae (St. John's-Wort Family)

       

·        Hardiness Zones:  4-7

·        Height: 2-3 feet

·        Spread: 2-3 feet

·        Bloom Time: early to late summer

·        Bloom: flat clusters of golden yellow, cup-shaped flowers with 5 petals surrounding a prominent tuft of golden stamens; long blooming

·        Light: full sun to part shade

·        Soil: prefers moist, rich, well-drained, sandy loams; but tolerates poor, rocky soils

·        Moisture: moist;  tolerates some drought once established

·        Use: low hedges, shrub borders, rock gardens, naturalized areas, groundcover on slopes; nectar-rich flowers attract pollinators and other insects

·        Care: low maintenance; flowers do not require deadheading

·        Concerns: no serious insect or disease problems

·        Native to: species native to Eastern Canada and Northeastern and North Central U.S.

·        Notes: compact shrub with dense, rounded habit rarely needs pruning; noted for the contrast of its blue-green linear foliage against the brilliant yellow flowers; salt-tolerant; deer-resistant

·        Supplier: Landscape Designs, Inc.

·        Teaching Garden Location & Code: Welcome Garden B162

 

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Hydrangea paniculata 'SMHPFL'

Fire Light® Panicle Hydrangea 'SMHPFL'

Family: Hydrangeaceae (Hydrangea Family)

       

·        Hardiness Zones:  3-8

·        Height: 6-8 feet

·        Spread: 6-8 feet

·        Bloom Time: early summer to early fall

·        Bloom: large white flower heads emerge creamy-white and age to pomegranate pink-red in late summer

·        Light: full sun to part shade; prefers afternoon shade in hot summer conditions

·        Soil: prefers humus-rich, moist, well-drained soil, but adaptable to most well-drained soils; intolerant of soggy soil

·        Moisture: medium, consistent

·        Use: borders, foundations, specimen, hedges, cut flower, dried flower; flowers attract butterflies and bees

·        Care: blooms on new wood, so prune to shape in later winter or early spring, cutting off no more than 1/3 their total length; apply controlled-release fertilizer in early spring; ; apply winter mulch to protect roots

·        Concerns: no serious insect or disease problems

·        Native to: hybrid cultivar; species native to Japan and eastern and southern China

·        Notes: exceptionally hardy, easy to grow, and long-blooming; upright rounded habit; multi-season interest; deep green coarse foliage; toxic to dogs, cats, and horses

·        Supplier: K&A Greenhouse

·        Teaching Garden Location & Code: Wet Garden D186

 

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Hydrangea paniculata 'AJ14'

Early Evolution Hydrangea 'AJ14'

Family: Hydrangeaceae (Hydrangea Family)

       

·        Hardiness Zones:  4-9

·        Height: 2 feet

·        Spread: 2 feet

·        Bloom Time: spring to fall

·        Bloom: late spring buds open to showy flower heads that slowly transition from lime-white to dark pink in September

·        Light: partial to full sun

·        Soil: best in rich, loamy, slightly acidic soil; adapts to most well-drained soils

·        Moisture: follow a regular watering schedule during first growing season to establish roots; thereafter water when top 2 inches of soil is dry

·        Use: good choice for the smaller garden, as background for a perennial border or containers; flowers attract butterflies and bees

·        Care: blooms on new wood, so prune to shape in later winter or early spring; apply controlled-release fertilizer in early spring; apply winter mulch to protect roots

·        Concerns: no serious insect or disease problems

·        Native to: hybrid cultivar; species native to Japan and eastern and southern China

·        Notes: compact form with upright spreading growth habit; moderate growth rate; early-blooming; multi-season interest; glossy, dark green pointed leaves

·        Supplier: K&A Greenhouse

·        Teaching Garden Location & Code: Heuchera Garden E267

 

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Hexastalis splenden (Asarum)

Evergreen Chinese Ginger

Family: Aristolochiaceae (Birthwort Family)

       

·        Hardiness Zones:  5-9

·        Height: 5-8 inches

·        Spread: 10-24 inches

·        Bloom Time: early spring

·        Bloom: vase-shaped, velvety, chocolate-purple flowers (fused sepals without petals) 2 inches wide under foliage at soil level

·        Light: bright shade to deep shade; avoid direct sunlight

·        Soil: average to slightly-acidic, humus-rich, moist, and well-drained

·        Moisture: low, consistent; drought tolerant once established

·        Use: attractive perennial groundcover for shady areas; woodland gardens; underplanting  roses and shrubs

·        Care: low maintenance; protect from slugs by clearing nearby areas of plant debris and mulch; if necessary, use slug removal interventions; prevent winter burn by sheltering from wind and sun; if needed  for rejuvenation, shear and remove the previous year's foliage

·        Concerns: generally resistant to pests and diseases, but watch for slugs and snails; prone to leaf burn from direct sunlight

·        Native to: China

·        Notes: thick mat of semi-evergreen foliage; large, dark green heart-shaped leaves (7 inches long and 3 inches wide) with prominent silver mottling; spreads moderately by underground rhizomes; slower-growing than Asarum wild gingers;  heat and humidity tolerant; deer resistant

·        Supplier: Landscape Designs, Inc.

·        Teaching Garden Location & Code: Shade Garden F277

 

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       Dane County UWEX Master Gardener Volunteer Program 

 

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       Dane County UWEX Horticulture Program