Nick’s Recommended Hedges from Minnesota Collection

Nick Kreevich, Associate Curator, Minnesota Landscape Arboretum

 

Amelanchier canadensis ‘Glenn Form’ Rainbow Pillar®
Rainbow Pillar serviceberry (20060784)
Amelanchier canadensis 'Glenn Form' Rainbow Pillar® Columnar Shadblow Serviceberry
Form/Shape: Best suited for a formal-shaped hedge due to architectural interest at base of hedge and sharper edges at top of hedge
Privacy: Semi-private to private, approximately 5ft+ tall at maturity
Foliage: Small green leaves change to shades of orange to red in the fall
Flower: Blooms in spring with white, showy flowers on old growth, which will form into blueish-green berries
Maintenance: Vigorous top growth; some holes/dieback in the hedge
Pest/Disease Issues: Rust, leaf spot, blight, powdery mildew, sawfly, leaf miner, borers and scale; few issues
Berberis thunbergii ‘Bailgreen’ Jade Carousel® – Barberry (20040359)
Berberis thunbergii 'Bailgreen' Jade Carousel® - Barberry
Form/Shape: Best suited for a formal-shaped hedge due to compact and dense growth
Privacy: Not private
Approximately 2-6ft tall at maturity
Foliage: Leaves emerge yellow-green in the spring, turning to deep green throughout growing season and change to a scarlet-orange in the fall
Flower: Ornamentally insignificant; blooms in spring with clusters of yellow flowers on old growth
Maintenance: Thorns are a nuisance, but slow growth allows less pruning maintenance; no holes in hedge; no weeds growing through
Pest/Disease Issues: Bacterial leaf spot, anthracnose, root rots, wilt, aphids, barberry webworm and scale
Important Note: In the eastern United States, the species Berberis thunbergii is known to be highly invasive through avian dispersion.
Berberis thunbergii ‘BailErin’ Limoncello™ – Barberry (20160305)
Berberis thunbergii 'BailErin' Limoncello™ - Barberry
Form/Shape: Best suited for a formal-shaped hedge due to compact and dense growth
Privacy: Not private
Approximately 2-6ft tall at maturity
Foliage: Small, chartreuse-colored foliage with spotted red margins that turn to shades of orange, yellow, and red in the fall for late season interest
Flower: Ornamentally insignificant; blooms in spring with clusters of yellow flowers on old growth
Maintenance: Thorns are a nuisance, but slow growth allows less pruning maintenance; no holes in hedge; no weeds growing through
Pest/Disease Issues: Bacterial leaf spot, anthracnose, root rots, wilt, aphids, barberry webworm and scale
Important Note: In the eastern United States, the species, Berberis thunbergii is known to be highly invasive through avian transmission.
Caragana frutex ‘Globosa’ – Globe Peashrub (19540087)
Caragana frutex 'Globosa' - Russian Peashrub
Form/Shape: Best suited for a more rounded or organically shaped hedge
Privacy: Not private to semi-private
Approximately 3-4ft tall at maturity
Foliage: Bluish-green leaves provide color interest throughout the growing season; leaves turning yellow in the fall add late growing season interest; small, round-shaped leaves provide textural interest
Flower: Blooms in spring with yellow pea-shaped flowers on old wood or on shoots that come off of old wood
Maintenance: Compact growth allows for more tidy shaping; however new growth can be vigorous; no weeds growing through; no holes in hedge; extremely drought tolerant
Pest/Disease Issues: Minor: stem decay, Septoria leaf spot, branch cankers; blister beetles
Chionanthus virginicus – White Fringe Tree (19620221)
Chionanthus virginicus - White Fringe Tree
Form/Shape: Best suited for a formal-shaped hedge due to dense foliage, tidiness, and height
Privacy: Semi-private to private
Approximately 5ft+ tall at maturity
Foliage: Long, glossy, vibrant green leaves give way to shades of yellow in the fall, providing late season interest
Flower: Blooms in spring with showy, fragrant, white flowers on old growth
Maintenance: Growth on top of hedge appears to be vigorous; can show signs of stress during prolonged bouts of drought or heat stress; some weeds growing through
Pest/Disease Issues: Few to no pests
Diervilla lonicera – Bush Honeysuckle (19911104)
Diervilla lonicera - Bush Honeysuckle
Form/Shape: Best suited for a more rounded or organically shaped hedge
Privacy: Not private
Approximately 2-3ft tall at maturity
Foliage: Foliage is dense, vibrant green, and turns to shades of yellow, orange ,and red in the fall
Flower: Blooms in summer with tubular-shaped, yellow flowers on new growth
Maintenance: Dense growth and small form provide less maintenance; performs well during drought stress due to nativity; due to colony forming habit, this shrub may require extra maintenance at base of hedge
Pest/Disease Issues: Minor: leaf spot and powdery mildew; few pests
Dirca palustris – Leatherwood (19660488)
Dirca palustris - Leatherwood
Form/Shape: Best suited for a formal-shaped hedge due to dense foliage; softer and rounded edges with new growth
Privacy: Private; approximately 4-6ft tall at maturity
Foliage: When leaves first emerge in spring, they are a bright green with yellow hues that fade to a deeper green later in the growing season; the foliage provides excellent fall interest, turning yellow
Flower: Ornamentally insignificant
Maintenance: Holds up well to heat and water stress; growth appears to be slower, so less pruning maintenance
Pest/Disease Issues: Minor; few pests
Hydrangea arborescens ‘Annabelle’ – Annabelle Hydrangea (20110551)
Hydrangea arborescens 'Annabelle' - Smooth Hydrangea
Form/Shape: Best suited for a more rounded or organically shaped hedge
Privacy: Not private to semi-private
Approximately 3-5ft tall at maturity
Foliage: Large green leaves provide dimension and textural interest; leaves turn yellow in the fall to provide fall interest
Flower: Blooms in early summer with large corymb inflorescences with white flowers; blooms on new growth
Maintenance: Vigorous growth and should be pruned in late winter or early spring to promote flowers
Pest/Disease Issues: Bud blight, bacterial wilt, leaf spots, mold, rust, powdery mildew, aphids, mites, scale, and nematodes
Hypericum kalmianum ‘Ames’ – Kalm St. John’s Wort (20160378)
Hypericum kalmianum 'Ames' - Kalm St. John's Wort
Form/Shape: Best suited for a formal-shaped hedge due to compact, dense, and tidy growth
Privacy: Not private; approximately 2-3ft tall at maturity
Foliage: Blueish-green foliage provides color interest, while narrow, linear-shaped leaves provide texture
Flower: Blooms in summer with yellow flowers on new growth
Maintenance: Dense and compact growth provide less maintenance for shaping into a hedge
Pest/Disease Issues: Minor; few pests
Juniperus chinensis ‘Maney’ – Maney Juniper (19610367)
Juniperus chinensis 'Maney' - Chinese Juniper
Form/Shape: Best suited for a formal-shaped hedge due to architectural interest at base of hedge with sharp, clean edges at the top of the hedge
Privacy: Semi-private; approximately 6 ft tall at maturity
Foliage: Powdery blue and evergreen foliage provides year-round interest that is also resistant to winter burn; foliage provides textural interest
Flower: Ornamentally insignificant
Maintenance: Slower growth provides less maintenance; takes to pruning well
Pest/Disease Issues: Tip and needle blights, cedar-apple rust, root rot, canker, aphids, bagworms, webworms, and scale
Picea x albertiana – White Spruce (20040281)
Picea glauca - White Spruce
Form/Shape: Best suited for a formal-shaped hedge due to dense foliage and height
Privacy: Semi-private to private
Foliage: Approximately 40ft+ tall at maturity if not pruned as hedge
Flower: Ornamentally insignificant
Maintenance: Could prove to be high maintenance due to its mature height if not pruned; dense foliage can also be an issue within high humidity environments, trapping moisture
Pest/Disease Issues:  Spruce budworm, spider mites; few pests
Potentilla fruticosa ‘UMan’ Mango Tango™ – Bush Cinquefoil (20100565)
Potentilla fruticosa 'Uman' Mango Tango™ - Bush Cinquefoil
Form/Shape: Best suited for a more rounded or organically shaped hedge
Privacy: Not private; approximately 2-3ft tall at maturity
Foliage: Small, fern-like, green leaves are dense and provide textural interest
Flower: Blooms in late spring through fall with deep yellow flowers on new growth
Maintenance: Dense and compact growth provide less maintenance for shaping into a hedge
Pest/Disease Issues: Mildew in humid climates, fungal leaf spot and spider mites
Rhus aromatica – Fragrant Sumac (19650040)
Rhus aromatica - Fragrant SumacCloseup of Rhus aromatica - Fragrant Sumac
Form/Shape: Best suited for a formal-shaped hedge due to dense foliage; softer and rounded edges with new growth
Privacy: Semi-private; approximately 2-6ft tall at maturity
Foliage: Green trifoliate leaves with bluish hues provide textural interest with fall color resulting in leaf color ranging from red to purple to orange
Flower: Ornamentally insignificant; red berries may be showy
Maintenance: Dense foliage allows only a few weeds to grow through; growth appears to be slower, so less pruning
Pest/Disease Issues: Leaf spot, rust, scale, aphids, and mites; few issues
Salix integra ‘Hakuro-Nishiki’ – Dappled Willow (20080370)
Salix integra 'Hakuro-Nishiki' - Dappled Willow
Form/Shape: Best suited for a more rounded or organically shaped hedge due to airy and light foliage
Privacy: Semi-private to private; approximately 4-6ft tall at maturity
Foliage: Shades of white, pink, and green variegated foliage on newer growth that fades to green in the late growing season; dense, but feathery (fine) with lance-shaped leaves
Flower: Ornamentally insignificant
Maintenance: Vigorous growth; few weeds growing through; to promote variegated coloration in foliage, annual pruning is necessary
Pest/Disease Issues: Blights, crown gall, powdery mildew, leaf spots, scab, rust, and canker
Salix purpurea ‘Nana’ – Dwarf Artic Willow (19530067)
Salix purpurea 'Nana' - Dwarf Purple Willow
Form/Shape: Best suited for a more rounded or organically shaped hedge due to airy and light foliage
Privacy: Not private to semi-private; approximately 2-3ft tall at maturity
Foliage: Dense, but feathery (fine); bluish-silver hue with reddish stems
Flower: Ornamentally insignificant
Maintenance: Vigorous growth, but not unruly; some weeds growing through
Pest/Disease Issues: Blights, powdery mildew, leaf spots, gray scab, and canker
Thuja occidentalis ‘Wareana’ – Wareana American Arborvitae (19670714)
Thuja occidentalis 'Wareana' - American Arborvitae
Form/Shape: Best suited for a formal-shaped hedge due to dense, tidy growth with sharp, clean edges
Privacy: Private; approximately 8-10 ft tall at maturity
Foliage: Dark green, evergreen foliage provides year-round interest; this selection is hardy to zone 3 and is less susceptible to winter burn
Flower: Ornamentally insignificant
Maintenance: Can grow up to a max of 1 foot per year; due to width and height of hedge, volume of maintenance is increased
Pest/Disease Issues: Leaf blight, canker, leaf miner, bagworms, mealybug, scale, spider mites, and winter burn
Viburnum dentatum ‘Christom’ Blue Muffin® – Arrowwood Viburnum (20110552)
Viburnum dentatum 'Christom' Blue Muffin® - Arrowwood Viburnum
Form/Shape: Best suited for a formal-shaped hedge due to dense foliage, tidiness, and height
Privacy: Semi-private to private; approximately 3-5ft tall at maturity
Foliage: Dark green leaves that are toothed provide some textural interest; decent fall color with foliage changing to shades of yellow, orange, and red
Flower: Blooms in spring with white flowers in showy corymb inflorescences on old growth
Maintenance: Due to compactness and height of selection, once mature, pruning becomes less frequent; species has some drought tolerance, but may suffer during very prolonged heat and drought stress
Pest/Disease Issues: Minor; white flies, few pests
Weigela florida ‘Java Red’ – Java Red Weigela (20110553)
Weigela florida 'Java Red' - Weigela
Form/Shape: Best suited for a formal-shaped hedge due to dense foliage, tidiness, and sharp edges
Privacy: Not private to semi-private; approximately
2 1/2-6ft tall at maturity
Foliage: Showy deep purple leaves provide visual interest for the entire growing season; toothed leaves with contrasting venation provide textural interest
Flower: Blooms in late spring with deep pink flowers on old growth
Maintenance: Growth is slow; no holes in the hedge; no weeds growing through; may need frequent watering during heat or drought stress
Pest/Disease Issues: Minor; few pests