Wednesday, November 4, 2009

Evergreen Shrub Of The Day

Euonymus japonicus 'Aureo-marginatus'
Spindletree, Box-leaf Euonymus, Evergreen Euonymus, Japanese Euonymus, Spindle Tree


Type Shrub, woody plant
Hardy range 6B to 10A
Height 4' to 5' / 1.20m to 1.60m
Spread 4' to 5' / 1.20m to 1.60m
Growth rate Average
Form Oval, upright or erect and vase shaped
Exposure Full shade to full sun
Persistence Evergreen and semi-evergreen

Bloom Color Green and white
Bloom Time Spring and Summer

Environment

This plant tolerates salt well.

This plant will grow in moist soil.

Suitable soil is well-drained/loamy, sandy or clay.

The pH preference is an acidic to slightly alkaline (less than 6.8 to 7.7) soil.

Leaf Color Green, variegated and yellow

Fall Color Red

This plant has attractive foliage and attractive fall colors.

Culture Notes

Spindle Tree is a loose, spreading shrub that can grow to 4 to 5 feet in heigh. The most outstanding feature of this large shrub is its red-orange fruit borne in the fall. The showy fruits are scarlet capsules that crack open in the fall to display their scarlet seeds, and a plant in heavy fruit is lovely. The dark green, deciduous foliage changes to a showy, bright red color in the fall. This plant has greenish-white, inconspicuous flowers that occur from May until June. Will revert to green foliage in time. Prune this out as you see it appear. Place in full sun for best foliage color. Pollen causes mild allergies.

The Spindle Tree is excellent for naturalizing and gives a stunning effect when massed or planted in a row. It can be used as a specimen or foundation plant (if it is regularly clipped) and creates a nice border or hedge.

Spindle Tree will tolerate different types of well-drained soils but does not tolerate drought well; water and mulch the ground beneath the canopy for best growth. It grows in sun or shade, putting on the best fall color in full sun. Some shade from the afternoon sun in the southern part of its range is beneficial. The plant will withstand heavy pruning and has been used as a hedge for many years. Spindle Tree transplants well when balled and burlapped or from containers. Plants tolerate high soil salt solutions up to about 8 mmhos/cm according to the saturated media extract method.

Planting and establishing shrubs

The most common cause of young plant failure is planting too deep. Plant the root ball no deeper than it was in the nursery. In most instances, the root flare zone (point where the top-most root in the root ball originates from the trunk) should be located just above the landscape soil surface. Sometimes plants come from the nursery with soil over the root flare. If there is soil over this area, scrape it off. The planting hole should be at least twice the width of the root ball, preferably wider. In all but exceptional circumstances where the soil is very poor, there is no need to incorporate anything into the backfill soil except the loosened soil that came out of the planting hole. Never place ANY soil over the root ball. If a row or grouping of plants is to be installed, excavating or loosening the soil in the entire bed and incorporating organic matter enhances root growth and establishment rate.

Weed suppression during establishment is essential. Apply a 3-inch thick layer of mulch around the plant to help control weed growth. Keep it at least 10 inches from the trunk. If you apply it over the root ball, apply only a one or two inch layer. This allows rainwater and air to easily enter the root ball and keeps the trunk dry. Placing mulch against the trunk or applying too thick a layer above the root ball can kill the plant by oxygen starvation, death of bark, stem and root diseases, prevention of hardening off for winter, vole and other rodent damage to the trunk, keeping soil too wet, or repelling water. Regular irrigation through the first growing season after planting encourages rapid root growth, which is essential for quick plant establishment.


Tuesday, November 3, 2009

Evergreen Shrub Of The Day

Berberis verruculosa
Warty Barberry


Type Shrub, woody plant
Hardy range 5A to 7B
Height 4' to 6' / 1.20m to 1.80m
Spread 4' to 7' / 1.20m to 2.20m
Growth rate Slow
Form Rounded
Exposure Full shade to full sun
Persistence Evergreen
Bloom Color Yellow
Bloom Time Spring

Environment

This plant tolerates some drought. This plant will grow in dry soil. Suitable soil is well-drained/loamy, sandy or clay. The pH preference is an acidic to alkaline (less than 6.8 to more than 7.7) soil.

Leaf Color Green and purple

Fall Color Red

This plant has attractive fall colors.

Culture Notes

Barberry is thorny, so it's useful for barrier plantings. The plant tolerates most light exposures and soils. This shrub grows slowly but transplants easily. It grows 3 to 6 feet tall and spreads 4 to 7 feet. Barberry can be sheared and used as a hedge plant. The main ornamental features are fall color in shades of red. The plant produces yellow flowers, but these are not highly ornamental. This plant is considered mostly allergy free and causes little or no allergy problems in most people.

Planting and establishing shrubs

The most common cause of young plant failure is planting too deep. Plant the root ball no deeper than it was in the nursery. In most instances, the root flare zone (point where the top-most root in the root ball originates from the trunk) should be located just above the landscape soil surface. Sometimes plants come from the nursery with soil over the root flare. If there is soil over this area, scrape it off. The planting hole should be at least twice the width of the root ball, preferably wider. In all but exceptional circumstances where the soil is very poor, there is no need to incorporate anything into the backfill soil except the loosened soil that came out of the planting hole. Never place ANY soil over the root ball. If a row or grouping of plants is to be installed, excavating or loosening the soil in the entire bed and incorporating organic matter enhances root growth and establishment rate.

Weed suppression during establishment is essential. Apply a 3-inch thick layer of mulch around the plant to help control weed growth. Keep it at least 10 inches from the trunk. If you apply it over the root ball, apply only a one or two inch layer. This allows rainwater and air to easily enter the root ball and keeps the trunk dry. Placing mulch against the trunk or applying too thick a layer above the root ball can kill the plant by oxygen starvation, death of bark, stem and root diseases, prevention of hardening off for winter, vole and other rodent damage to the trunk, keeping soil too wet, or repelling water. Regular irrigation through the first growing season after planting encourages rapid root growth, which is essential for quick plant establishment.

Thursday, October 22, 2009

Deciduous Shrub Of The Day

Euonymus alatus 'Compactus'
Winged Euonymus

Type Shrub, woody plant

Hardy range 4B to 8B

Height 8' to 10' / 2.40m to 3.00m

Spread 6' to 10' / 1.80m to 3.00m

Growth rate Average

Form Rounded

Exposure Partial shade or partial sun to full sun

Persistence Deciduous

Bloom Color Green and yellow

Bloom Time Spring

Environment

This plant tolerates drought.

This plant will grow in very dry soil.

Suitable soil is well-drained/loamy, sandy or clay.

The pH preference is an acidic to slightly alkaline (less than 6.8 to 7.7) soil.

Leaf Color Green

Fall Color Red

This plant has attractive fall colors.

Leaf Identification

Type: Simple

Arrangement: Opposite

Venations: Pinnate

Margins: Serrate

Shapes: Elliptic and obovate

Length: Less than 2in./5cm to 4in./10cm

Culture Notes

This cultivar stays smaller than the species, but is not as compact as 'Rudy Haag'. This is still not a small plant but is better adapted for residential landscapes than the species. The fall color is second to none among any plant used in the US. Use the compact cultivars instead of the species for planting along foundations. Plants appear to survive dry periods well but will enjoy a mulched layer like other shrubs and trees will. Killing point for young roots is 19 degrees F; for mature roots 7 degrees F. Pollen causes mild allergies.

Planting and establishing shrubs

The most common cause of young plant failure is planting too deep. Plant the root ball no deeper than it was in the nursery. In most instances, the root flare zone (point where the top-most root in the root ball originates from the trunk) should be located just above the landscape soil surface. Sometimes plants come from the nursery with soil over the root flare. If there is soil over this area, scrape it off. The planting hole should be at least twice the width of the root ball, preferably wider. In all but exceptional circumstances where the soil is very poor, there is no need to incorporate anything into the backfill soil except the loosened soil that came out of the planting hole. Never place ANY soil over the root ball. If a row or grouping of plants is to be installed, excavating or loosening the soil in the entire bed and incorporating organic matter enhances root growth and establishment rate.

Weed suppression during establishment is essential. Apply a 3-inch thick layer of mulch around the plant to help control weed growth. Keep it at least 10 inches from the trunk. If you apply it over the root ball, apply only a one or two inch layer. This allows rainwater and air to easily enter the root ball and keeps the trunk dry. Placing mulch against the trunk or applying too thick a layer above the root ball can kill the plant by oxygen starvation, death of bark, stem and root diseases, prevention of hardening off for winter, vole and other rodent damage to the trunk, keeping soil too wet, or repelling water. Regular irrigation through the first growing season after planting encourages rapid root growth, which is essential for quick plant establishment.

Wednesday, October 21, 2009

Perennial Of The Day

Heuchera 'Green Spice'
Alumroot, Coral Bells

Type Perennial

Hardy range 4A to 9A

Height 6" to 9" / 15cm to 23cm

Spread 14" to 16" / 35cm to 40cm

Growth rate Fast

Form Rounded

Exposure Full shade to partial sun

Persistence Evergreen

Bloom Time Summer

The flowers are suitable for cut flowers.

Environment

This plant tolerates some drought.

This plant will grow in moist soil.

Suitable soil is well-drained/loamy.

The pH preference is a neutral soil.

Leaf Color Green, silvery and variegated

This plant has attractive foliage.

Culture Notes

These herbaceous, evergreen, perennial herbs are increasing in popularity due to the fact that newer varieties of Heucheras offer taller and larger flowers, ruffled foliage and increased hardiness to heat, humidity and cold. Heucheras are already valued for their lovely, varied foliage and striking, bell-shaped flowers in various colors. Their stalks spike up from the center of the plant and vary in height.

When planting, make sure crowns are just above the soil level. Keep plants moist, but well-drained, and mulch before the onset of cold weather. It's highly unlikely that Heucheras will survive in clay. In the South, Heucheras do best if planted in partial shade; if grown in cooler climates, the plant flowers longer if spent blossoms are removed. Many Heucheras will attract both hummingbirds and bees.

'Green Spice' has variegated foliage of greenish-gray-silver colorations with purple veins.