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Summary
Physical Characteristics
Allium platycaule is a BULB growing to 0.1 m (0ft 4in).
See above for USDA hardiness. It is hardy to UK zone 6. It is in flower from May to June. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees, insects.
Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It cannot grow in the shade. It prefers dry or moist soil.
UK Hardiness Map
US Hardiness Map
Synonyms
A. anceps. Kellog.
Plant Habitats
Cultivated Beds;
Edible Uses
Edible Parts: Flowers Leaves Root Seed
Edible Uses:
Bulb - raw or cooked[177, 257]. The bulbs are formed in clusters on a rhizome and are about 20 - 35mm in diameter[200]. Leaves - raw or cooked. Used as an onion-flavoured relish[257]. Flowers - raw. Used as a garnish on salads. The seed heads can be placed in hot ashes for a few minutes, then the seeds extracted and eaten[257].
References More on Edible Uses
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
Although no specific mention of medicinal uses has been seen for this species, members of this genus are in general very healthy additions to the diet. They contain sulphur compounds (which give them their onion flavour) and when added to the diet on a regular basis they help reduce blood cholesterol levels, act as a tonic to the digestive system and also tonify the circulatory system[K].
References More on Medicinal Uses
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Other Uses
Repellent
The juice of the plant is used as a moth repellent. The whole plant is said to repel insects and moles[20].
Special Uses
References More on Other Uses
Cultivation details
Prefers a sunny position in a light well-drained soil[1]. The bulbs should be planted fairly deeply[1]. Most members of this genus are intolerant of competition from other growing plants[203]. Grows well with most plants, especially roses, carrots, beet and chamomile, but it inhibits the growth of legumes[18, 20, 54]. This plant is a bad companion for alfalfa, each species negatively affecting the other[201]. Members of this genus are rarely if ever troubled by browsing deer[233].
References Carbon Farming Information and Carbon Sequestration Information
Temperature Converter
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Plant Propagation
Seed - sow spring in a cold frame. Prick out the seedlings into individual pots when they are large enough to handle - if you want to produce clumps more quickly then put three plants in each pot. Grow them on in the greenhouse for at least their first winter and plant them out into their permanent positions in spring once they are growing vigorously and are large enough. Division in spring. The plants divide successfully at any time in the growing season, pot up the divisions in a cold frame or greenhouse until they are growing well and then plant them out into their permanent positions.
Other Names
If available other names are mentioned here
Native Range
NORTHERN AMERICA: United States (Oregon, California, Nevada)
Weed Potential
Right plant wrong place. We are currently updating this section.
Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.
Conservation Status
IUCN Red List of Threatened Plants Status :
| Related Plants
|
| Latin Name | Common Name | Habit | Height | Hardiness | Growth | Soil | Shade | Moisture | Edible | Medicinal | Other |
| Allium acuminatum | Hooker's Onion, Tapertip onion | Bulb | 0.3 |
5-9
| | LM | N | DM | 3 | 2 | 2 |
| Allium aflatunense | Persian Onion, Ornamental Onion | Bulb | 1.0 |
4-8
| M | LM | N | M | 2 | 2 | 1 |
| Allium akaka | | Bulb | 0.2 |
7-10
| | LM | N | DM | 3 | 2 | 1 |
| Allium altaicum | | Bulb | 0.3 |
-
| | LM | N | M | 3 | 2 | 1 |
| Allium ampeloprasum | Wild Leek, Broadleaf wild leek | Bulb | 1.8 |
5-9
| | LMH | N | DM | 5 | 3 | 2 |
| Allium ampeloprasum babingtonii | Babington's Leek | Bulb | 1.8 |
0-0
| | LMH | N | DM | 3 | 3 | 2 |
| Allium angulare | | Bulb | 0.0 |
-
| | LM | N | M | 3 | 2 | 1 |
| Allium angulosum | Mouse Garlic | Bulb | 0.5 |
4-8
| | LMH | SN | M | 3 | 2 | 1 |
| Allium atropurpureum | | Bulb | 1.0 |
7-10
| | LM | SN | M | 3 | 2 | 1 |
| Allium bisceptrum | Aspen Onion, Twincrest onion | Bulb | 0.3 |
7-10
| | LM | N | M | 3 | 2 | 1 |
| Allium bodeanum | | Bulb | 0.2 |
-
| | LM | N | DM | 3 | 2 | 1 |
| Allium bolanderi | Bolander's Onion | Bulb | 0.2 |
6-9
| | LM | N | M | 3 | 2 | 1 |
| Allium brevistylum | Shortstyle Onion | Bulb | 0.5 |
-
| | LM | N | MWe | 3 | 2 | 1 |
| Allium canadense | Canadian Garlic, Meadow garlic, Fraser meadow garlic, Hyacinth meadow garlic | Bulb | 0.5 |
4-8
| | LM | SN | MWe | 4 | 2 | 2 |
| Allium canadense mobilense | Canadian Garlic | Bulb | 0.5 |
4-8
| | LM | SN | MWe | 5 | 2 | 1 |
| Allium carinatum | Keeled Garlic | Bulb | 0.6 |
6-9
| | LMH | SN | M | 3 | 2 | 1 |
| Allium carolinianum | | Bulb | 0.4 |
-
| | LM | N | DM | 3 | 2 | 1 |
| Allium cepa | Onion, Garden onion | Bulb | 0.6 |
4-10
| | LM | N | M | 5 | 3 | 3 |
| Allium cepa aggregatum | Potato Onion | Bulb | 1.2 |
4-8
| | LM | N | M | 4 | 3 | 3 |
| Allium cepa ascalonicum | Shallot | Bulb | 0.3 |
4-8
| | LM | N | M | 5 | 3 | 2 |
| Allium cepa proliferum | Tree Onion, Walking Onion | Bulb | 1.2 |
4-8
| | LM | N | M | 5 | 3 | 3 |
| Allium cernuum | Nodding Onion, New Mexican nodding onion | Bulb | 0.5 |
5-9
| | LMH | N | M | 5 | 2 | 2 |
| Allium chinense | Rakkyo | Bulb | 0.3 |
6-9
| | LM | N | M | 4 | 2 | 1 |
| Allium condensatum | | Bulb | 0.6 |
4-8
| | LM | N | M | 3 | 2 | 1 |
| Allium cupanii | | Bulb | 0.3 |
7-10
| | LM | N | DM | 3 | 2 | 1 |
| Allium douglasii | Douglas' Onion | Bulb | 0.3 |
0-0
| | LM | N | DM | 3 | 2 | 1 |
| Allium dregeanum | Wild Onion | Bulb | 0.6 |
-
| | LM | N | DM | 3 | 2 | 1 |
| Allium drummondii | Prairie Onion, Drummond's onion | Bulb | 0.3 |
6-9
| | LM | N | M | 3 | 2 | 1 |
| Allium fistulosum | Welsh Onion | Bulb | 0.6 |
5-9
| | LMH | N | M | 5 | 2 | 2 |
| Allium flavum | Small Yellow Onion, Ornamental Onion | Bulb | 0.5 |
4-7
| M | LMH | SN | M | 2 | 2 | 1 |
|
|
Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.
Expert comment
Author
S.Watson.
Botanical References
71200
Links / References
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