Tuesday, June 1, 2010

Perennial Of The Day

 
Cordyline terminalis
Hawaiian Ti Plant, Dracaena, Red Dracaena, Good Luck Plant

Type Perennial, succulent
Hardy range 10B to 11
Height 4' to 6' / 1.20m to 1.80m
Spread 12" to 36" / 30cm to 90cm
Growth rate Average
Form Upright or erect
Exposure Partial shade or partial sun to full sun
Persistence Evergreen

Bloom Color White
Bloom Time Spring

Environment This plant tolerates some drought.
This plant will grow in dry to 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, pink, purple and variegated
Fall Color No change in fall color
This plant has attractive foliage.

Culture Notes Good Luck Plant grows well as a house plant in a sunny location. It is used in outdoor landscapes as an accent, either planted alone in a small garden or massed in larger-sized landscapes. For best leaf color, grow in partial shade. Cordyline will defoliate when there are temperature and moisture extremes. Overall, however, it's a long-lived plant under favorable conditions.


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, May 28, 2010

Day Of The Orchid

    Zygopetalum mackaii
Orchid

Type Perennial
Hardy range 10B to 11
Height 15" to 20" / 40cm to 50cm
Growth rate Average
Form Irregular or sprawling
Exposure Partial shade or partial sun

Bloom Color Brown, purple and white
Bloom Time Fall and Winter

The flowers are showy.

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

Leaf Color Green


Culture Notes To use in a container, pot with pieces of tree fern and fern roots for drainage. Prevent the full sun from reaching the plant. It will need lots of moisture in the summer with fertilizer once every 2 weeks. Once the pseudotubers are formed, give the plant a dormancy period to promote blooming, but never let the Zygopetalum dry completely out. The bloom is a yellow-green color and is shaped like a star. It is speckled with a purple-brown color, and the lip has a fan shaped blade that is white; spotted and streaked with some purple.

Paphiopedilum x 'Agincourt'
Venus' Slipper, Lady's Slipper, Slipper Orchid 

Type Perennial
Hardy range 10A to 11
Height 8" to 10" / 20cm to 25cm
Growth rate Average
Form Irregular or sprawling
Exposure Partial shade or partial sun

Bloom Color Yellow
The flowers are showy and suitable for cut flowers.

Environment This plant will grow in moist soil.
Suitable soil is well-drained/loamy.
The pH preference is a neutral to slightly alkaline (6.8 to 7.7) soil.

Leaf Color Green
This plant has attractive foliage.

Culture Notes Venus' Slipper prefers rain or soft water and frequent spraying. Fertilize frequently during the growth period, although a dormant period is not necessary. A well-drained soil is a must for this plant to be healthy.


 
Phalaenopsis x
Moth Orchid

Type Perennial
Hardy range 10B to 11
Height 4" to 6" / 10cm to 15cm
Growth rate Average
Form Upright or erect
Exposure Full shade to full sun

Bloom Color Lavender, pink, purple, red, white and yellow
Bloom Time Spring and Summer

The flowers are showy and suitable for cut flowers.

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

Leaf Color Green and purple

Culture Notes Water can collect in the thick leaves of the Moth Orchid. No dormancy is needed because this orchid has no pseudotubers. It requires a low temperature in the winter with less moisture. During the growth period, fertilize every 2 weeks and keep the humidity high, with lots of moisture at the roots. This is a rock dwelling plant. These are very popular orchids, particularly when it comes to cut flowers for bridal bouquets, etc.


 
Cypripedium acaule
Pink Lady's Slipper, Moccasin Flower, Ladyslipper Orchid

Type Perennial
Hardy range 5A to 8A
Height 8" to 12" / 20cm to 30cm
Growth rate Slow
Form Upright or erect
Exposure Full shade to partial sun
Persistence Deciduous

Bloom Color Pink
Bloom Time Spring and Summer

Environment This plant will grow in moist soil.
Suitable soil is well-drained/loamy.
The pH preference is an acidic (less than 6.8) soil.

Leaf Color Green

Culture Notes These orchids are difficult to cultivate. If they are doing well in the garden, they should not be disturbed.

  
  
 
Cymbidium x
Cymbidium Orchid

Type Perennial
Hardy range 10A to 10B
Height 12" to 24" / 30cm to 60cm
Growth rate Average
Form Irregular or sprawling
Exposure Partial shade or partial sun
Persistence Evergreen

Bloom Color Orange, pink, purple, red, white and yellow
Bloom Time Spring and Summer

The flowers are suitable for cut flowers.

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

Leaf Color Green

This plant has attractive foliage.

Culture Notes Orchids are frequently used as house plants, but they will grow outdoors and tolerate even some frost. Avoid excessive high temperatures and give plenty of water and food when orchids are actively growing. Keep them in a bright location, away from direct sun. Staking may be required on the taller types.


 
Cattleya maxima
Orchid

Type Perennial
Hardy range 10B to 11
Height 8" to 12" / 20cm to 30cm
Growth rate Slow
Form Irregular or sprawling
Exposure Full shade to partial sun

Bloom Color Lavender, pink, purple, red, white and yellow
Bloom Time Year 'round

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

Environment This plant tolerates drought and a little salt.
This plant will grow in moist to wet soil.
Suitable soil is well-drained/loamy or sandy.
The pH preference is a neutral soil.

Leaf Color Green

Culture Notes Beautifully marked flowers are large and may range in color from a lavender to a light rose. Growing on trees, this orchid is an epiphyte. It can be grown in a container, such as a lattice basket, as long as the pot is well draining. Never give this orchid full sun in the summer or spring. During growth, provide lots of water and fertilize regularly and, once dormant, keep dry.


 
Disa uniflora
Pride of Table Mountain, Orchid

Type Perennial
Hardy range 10B to 11
Height 6" to 24" / 15cm to 60cm
Growth rate Average
Form Upright or erect
Exposure Full shade

Bloom Color Pink
Bloom Time Spring and Winter

The flowers are showy and suitable for cut flowers.

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

Leaf Color Green

Culture Notes Grow cool in the winter, giving less water. In the summer keep shaded with plenty of rainwater and a well-drained environment. The Pride of Table Mountain has the largest flowers in the genus. The roots of this plant prefer a wet soil. Exportation from their native land is prohibited.  


 
Dendrobium x
Orchid, Rock Lily

Type Perennial
Hardy range 10B to 11
Height 6" to 14" / 15cm to 35cm
Growth rate Average
Form Upright or erect
Exposure Partial shade or partial sun to full sun
Persistence Deciduous

Bloom Color Lavender, pink, purple and white
Bloom Time Summer

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

Environment 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 The Orchid needs a cool, dry winter with little water and no fertilizer. It can be grown outdoors where there are frost free winters and moderate summers. In the South, cool conditions and minimal temperatures are needed. In the North, it needs warmth, high light and a rest during winter to promote flowering.


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Wednesday, May 26, 2010

Perennial Of The Day

 Arenaria montana
Mountain Sandwort

Type Perennial
Hardy range 4A to 7A
Height 8" to 10" / 20cm to 25cm
Growth rate Average
Form Spreading or horizontal
Exposure Partial shade or partial sun to full sun

Bloom Color White
Bloom Time Summer

EnvironmentThis plant will grow in moist soil.
Suitable soil is sandy.
The pH preference is a neutral soil.

Leaf Color Green

Culture NotesKeep sandwort well watered during its growing season and only moist during the winter.

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Tuesday, May 25, 2010

Perennial Of The Day

Alcea rugosa
Hollyhock

Type Biennial, perennial
Hardy range 2A to 8A
Height 5' to 6' / 1.60m to 1.80m
Spread 12" to 36" / 30cm to 90cm
Growth rate Fast
Form Upright or erect
Exposure Full sun

Bloom Color Yellow
Bloom Time Summer and Fall

The flowers are showy and suitable for cut flowers.

Environment This plant tolerates some drought and some salt.
This plant will grow in dry to 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 Green

Culture Notes This tall plant will need staking if not planted next to a fence or a wall. Remember that cultivars will not come true from seed. This plant is usually grown as a biennial, but can be grown as a perennial if, after flowering, it is cut to 6in/15cm above the ground. Burn the remains.
A. rugosa (Russian Hollyhock) has large, single, yellow (sometimes appearing as yellowish-orange) blooms and deeply lobed foliage. It tends to have less of a problem with hollyhock rust than some of the other cultivars.


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Monday, May 24, 2010

Perennial Of The Day

Aconitum x cammarum syn. Aconitum bicolor 'Eleanor'
Monk's Hood

Type Perennial
Hardy range 4A to 8A
Height 36" to 4' / 90cm to 1.20m
Spread 12" to 18" / 30cm to 45cm
Growth rate Average
Form Upright or erect
Exposure Partial shade or partial sun

Bloom Color Lavender
Bloom Time Summer

The flowers are suitable for cut flowers.

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

Leaf Color Green

Culture Notes Plant in fall or early spring and do not transplant if it is not necessary. If Aconitums are planted in a sunny location, keep them well watered and do not allow them to dry out. Otherwise stunting may occur. The leaves, roots and seeds of these plants are poisonous, so use good judgement if transplanting.
Needs a cool, moisture retentive soil.


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