Monday, August 8, 2011

Small Globe Thistle, Perennial of The Day

Echinops ritro 'Taplow Blue'
    Small Globe Thistle

Type    Perennial
Hardy range    4A to 9A
Height    36" to 4' / 90cm to 1.20m
Spread    24" to 36" / 60cm to 90cm
Growth rate    Fast
Form    Irregular or sprawling
Exposure    Full sun
Persistence    Deciduous

Bloom Color    Blue
Bloom Time    Summer and Fall

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

Environment
This plant tolerates drought.
This plant will grow in dry to moist soil.
Suitable soil is sandy.
The pH preference is a neutral to alkaline (6.8 to more than 7.7) soil.

Leaf Color    Silvery

Culture Notes
Root cuttings can be made in the spring.  Seeds can be collected late summer, but this plant notoriously self-sows and may take over gardens if the seed heads are not removed before ripe.  The heavy textured leaf has a creamy white underside.  The round steel blue flower contrasts well with other perennials,  such as Rudbeckia, Kniphofia, Echinacea, and Heliopsis sp.

Wednesday, August 3, 2011

Treasure Flower, Perennial of The Day

Gazania rigens 'Cream Beauty'     
syn. Gazania ringens; Gazania splendens
    Treasure Flower,  Gazania

Type    Perennial
Hardy range    9A to 10A
Height    10" to 16" / 25cm to 40cm
Growth rate    Fast
Form    Spreading or horizontal
Exposure    Full sun

Bloom Color    White
Bloom Time    Spring through Fall

The flowers are showy.

Environment
This plant tolerates drought and some salt.
This plant will grow in dry to moist soil.
Suitable soil is sandy.
The pH preference is  a neutral soil.

Leaf Color    Green and silvery

Culture Notes
The flowers close at night and on cloudy days.  These plants are often grown as annuals in colder areas.  This plant will tolerate mild frost only.

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Monday, August 1, 2011

China Aster, Annual of The Day

Callistephus chinensis 'Pompom'     
syn. Aster sinensis
    China Aster

Type    Annual
Height    18" to 36" / 45cm to 90cm
Growth rate    Average
Form    Upright or erect
Exposure    Full sun

Bloom Color    Red
Bloom Time    Summer and Fall

The flowers are suitable for cut flowers.


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


Leaf Color    Green

Culture Notes
Once the flowers of the plant have been cut or have faded, it will not bloom again.  Start new plants at successive intervals to obtain longer bloom period.  Avoid planting in the same place in successive years to prevent diseases.