Choice Bulb Farms

Allium Cowani         Back to Plants

    allium cowani
(Closely related and often sold as Allium Neapolitanum and Allium Subhirsitum)
Description:The entire plant is stronger and much larger than both others that it is commonly mistaken for. The flower stem is 16-20” tall and clearly triangular in shape. The snow-white floralscape consists of 12 -20 star shaped flowers with sharply contrasting green stamens. Upon emerging, the stem grows and twists between the grassy foliage mostly horizontally until it gradually becomes upright. Often the foliage already appears in the fall and freezes off over the winter; however this is of  little concern, except in a nice wet spring where dead foliage is a good starting point for fungi (often seen as rust spots) The bulbs have a hard skin and look somewhat like small, reddish colored marbles.
Flowering time: Early May.
Planting Depth: 2-3” deep and same distance apart
Placement: Plant in sunny, open spot. Naturalizes
Soil type: any good soil well.  
Frosthardiness: Hardy.
USDA Zone: Zones 5-9
Recommended planting time: Fall.
Origin:Mediterranean, Asia Minor.
Bulb size: 4 cm/up

 

PLant POINTS

Sizing
In general, the bigger the bulb, the larger the flower. Bulbs traditionally are sized in centimeters circumference (2.5 cm=1 inch) However, some bulbs do not size well and can not be measured in this way because of their odd shape. Eremurus is a good example of this; its long, spider-like arms cannot easily or practically be measured, consequently it is sold by grading it by numbers (number one being the largest of its type, number two being second largest etc.) In the case of these odd bulbs that can not be graded, we ship the largest practical size.

FROSTHARDINESS.
ITo the best of our ability, we have given you a guess as to how hardy any of the bulbs we offer are. Conditions vary greatly depending on microclimate, altitude, soil-type, etc. We have used the USDA chart, which divides the country according to lowest average winter temperature. You, however, are the best judge on how cold the weather really gets in your given area

DRAINAGE.
All bulbs need good drainage, this is more important that any other growing condition.

Naming
A bulb is an under ground storage organ consisting of a series of scales attached to a basal plate ,such as tulip , allium ,lily. A corm is a solid tissue mass with specific points for growth nodes and roots, such as gladiolus, crocus. A tuber is and underground stem capable of producing buds and roots, such as begonia or calla. A rhizome is a swollen root modified to be come a storage organ and capable of the same, eremurus, lily of the valley,aconitum. They are in general called "bulbs". They are underground storage organs developed to overcome adverse climate conditions and capable of producing above ground plants at certain times and survive mostly by division.

BULB DEFINITION.
A bulb is an under ground storage organ consisting of a series of scales attached to a basal plate ,such as tulip , allium ,lily. A corm is a solid tissue mass with specific points for growth nodes and roots, such as gladiolus, crocus. A tuber is and underground stem capable of producing buds and roots, such as begonia or calla. A rhizome is a swollen root modified to be come a storage organ and capable of the same, eremurus, lily of the valley,aconitum. They are in general called "bulbs". They are underground storage organs developed to overcome adverse climate conditions and capable of producing above ground plants at certain times and survive mostly by de vision.

ORIGIN.
If you familiarize yourself with the origin and natural growing conditions of these plants, you can avoid a great many costly mistakes. For instance, a plant that originates from a harsh land-climate will not do well in a tropical or sub-tropical climate, although it might prosper on higher elevations in such a climate.

FERTILIZATION.
Once established, fertilize only sparingly prior to active growth. Water as long as there is green foliage. Fertilize with a well decayed manure or a chemical fertilizer high in P and K and low in N, preferably a slow release type as this is more practical and