Tuesday, July 27, 2010

Deciduous Shrub Of The Day

Weigela florida 'Courtalor(Carnaval™)'
Old Fashioned Weigela, Rose Weigela

Type Shrub, woody plant
Hardy range 4B to 8A
Height 36" to 4' / 90cm to 1.20m
Spread 36" to 4' / 90cm to 1.20m
Growth rate Average
Form Rounded
Exposure Full sun
Persistence Deciduous

Bloom Color Pink
Bloom Time Spring

The flowers are very showy.

EnvironmentThis 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
Fall Color No change in fall color

Culture NotesWeigela grows best in a sunny location and moist soil. Shaded plants are straggly. Weigela also dislikes crowding. The growth rate is moderate and the shrub transplants well. Some annual dieback and winter injury make annual pruning necessary. Plants suffer in the deep south eastern part of the US.
Planting and establishing shrubsThe 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.


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Friday, July 23, 2010

Day Of The Hosta

Hosta x 'Paul's Glory'
Hosta, Plantain Lily, Plantain Lily

Type Perennial
Hardy range 3A to 8A
Height 18" to 24" / 45cm to 60cm
Spread 36" to 4' / 90cm to 1.20m
Growth rate Average
Form Rounded
Exposure Full shade to partial sun
Persistence Deciduous

Bloom Color Lavender
Bloom Time Summer

The flowers are showy and suitable for cut flowers.

Environment This plant will grow in moist soil.
Suitable soil is well-drained/loamy, sandy or clay.
The pH preference is an acidic to neutral (less than 6.8 to 7.2) soil.

Leaf Color Blue, green, variegated and yellow
This plant has attractive foliage.


Culture Notes Remove flower heads when flowers are spent. Hostas will grow best in a moist, fertile loamy soil in a woodland setting. Plants go well with: Astilbe, Ferns, Epimedium, Rodgersia, and Dicentra sp. This plant is considered mostly allergy free and causes little or no allergy problems in most people.
'Paul's Glory' has yellow foliage with a blue-green edge. A medium-size hosta, it has bell-shaped blooms which top 2" scapes. Its leaves are thicker than most hostas, making it less prone to slug attack and other pests. Deer and rabbits are, however, attracted to 'Paul's Glory'. There should be a reduction in nitrogen in late summer so as to allow the plant to get ready for fall dormancy. 'Paul's Glory' was selected by the American Hosta Growers Association in 1999 for its outstanding merits.


Hosta x 'Amber Maiden'
Hosta, Plantain Lily, Plantain Lily

Type Perennial
Hardy range 4A to 9A
Height 12" to 18" / 30cm to 45cm
Spread 24" to 36" / 60cm to 90cm
Growth rate Average
Form Rounded
Exposure Full shade to partial sun
Persistence Deciduous

Bloom Color Lavender
Bloom Time Summer and Fall

Environment This plant will grow in moist soil.
Suitable soil is well-drained/loamy, sandy or clay.
The pH preference is an acidic to neutral (less than 6.8 to 7.2) soil.
This plant has attractive foliage.

Leaf Color Green, variegated and yellow

Culture NotesRemove flower heads when flowers are spent. Hostas will grow best in a moist, fertile loamy soil in a woodland setting. Plants go well with: Astilbe, Ferns, Epimedium, Rodgersia, and Dicentra sp. This plant is considered mostly allergy free and causes little or no allergy problems in most people.
  
Hosta tokudama f. aureonebulosa
Hosta, Plantain Lily

Type Perennial
Hardy range 4A to 9A
Height 12" to 18" / 30cm to 45cm
Spread 36" to 3' / 90cm to 1.00m
Growth rate Slow
Form Rounded
Exposure Full shade to partial sun
Persistence Deciduous

Bloom Color Lavender
Bloom Time Summer

Environment This plant tolerates some salt.
This plant will grow in moist soil.
Suitable soil is well-drained/loamy, sandy or clay.
The pH preference is an acidic to neutral (less than 6.8 to 7.2) soil.

Leaf Color Variegated
Fall Color No change in fall color

This plant has attractive foliage.


Culture Notes Remove flower heads when flowers are spent. Hostas will grow best in a fertile loamy soil in a woodland setting with filtered sunlight. Mulch every autumn, and keep the hostas moist.

Hosta sieboldiana 'Frances Williams'
Hosta, Plantain Lily

Type Perennial
Hardy range 3A to 9A
Height 24" to 30" / 60cm to 75cm
Spread 4' to 5' / 1.40m to 1.60m
Growth rate Average
Form Rounded
Exposure Full shade to partial sun
Persistence Deciduous

Bloom Color Lavender
Bloom Time Summer

Environment This plant will grow in moist soil.
Suitable soil is well-drained/loamy, sandy or clay.
The pH preference is an acidic to neutral (less than 6.8 to 7.2) soil.
This plant has attractive foliage.

Leaf Color Blue, green and variegated

Culture Notes References frequently list this Hosta as 'Francis Williams', but since it is named for its breeder, Frances Williams a woman, Frances is spelled with an "e". Remove flower heads when flowers are spent. The foliage of H. sieboldiana is usually puckered, ribbed and heavily dimpled. Hosta will grow best in a fertile, loamy soil in a woodland setting. Easy to grow, the lavender-white blossoms of 'Frances Williams' look lovely against its bluish-green foliage. Plants go well with: Astilbe, Ferns, Epimedium, Rodgersia, and Dicentra. 



Thursday, July 22, 2010

Perennial Of The Day

Helianthus salicifolius 'First Light'
Willowleaf Sunflower

Type Perennial
Hardy range 5A to 9A
Height 24" to 30" / 60cm to 75cm
Growth rate Fast
Form Upright or erect
Exposure Full sun

Bloom Color Yellow
Bloom Time Fall

The flowers are showy, suitable for cut flowers and suitable for dried flowers.

Environment This plant tolerates drought.
This plant will grow in moist soil.
Suitable soil is well-drained/loamy.
The pH preference is a neutral soil.

Leaf Color Green

Culture Notes Willowleaf Sunflowers have very narrow leaves on tall stems. This species is more tolerant of drought-like conditions than other species, and it does quite well when pruned back in the summer.


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Monday, July 19, 2010

Perennial Ground Cover Of The Day

Ruschia spinescens
Ice Plant

Type Perennial, succulent
Hardy range 10A to 11
Height 6" to 12" / 15cm to 30cm
Growth rate Average
Form Spreading or horizontal
Exposure Full sun
Persistence Evergreen

Bloom Color Purple
Bloom Time Spring and Winter

Environment This plant tolerates drought.
This plant will grow in dry soil.
Suitable soil is well-drained/loamy or sandy.
The pH preference is a neutral soil.

Leaf Color Blue and green

Culture Notes Stem cuttings can be taken in the spring. This plant does not do well in hot humid conditions.

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