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Tapertip onion

The Tapertip onion (Allium acuminatum)

is a fully hardy perennial deciduous forb with purple flowers in early Summer, mid Summer and late Summer. It grows well in semi-shade, and prefers low levels of water. This plant requires a minimum of 120 frost free days to grow successfully. It has average drought tolerance.


Allium acuminatum grows in soils ranging from a pH of 6 (acidic ranges from 5.6 to 6) to 8 (slightly alkaline ranges from 7.6 to 8). It is adapted to silt, sand, loam, clay loam, silt loam, sandy loam, loamy sand, silty clay loam and sandy clay loam soils, and prefers low fertility.


This is a erect plant and has a multiple stem growth form, and has an ultimate height of 0.3m / 11.8in.


The leaves are green in Summer.


Hedge (high).


Very resistant to fire.

Fruit and seed

There is a high fruit/seed abundance beginning in Summer and ending in Autumn.

Progagation and germination

Propagation techniques include bulbs, container and seed. The seed can be germinated by cold stratification / cold moist prechilling.

-28°C / -18.4F 6 to 8 0.3m / 11.8in
Scientific classifications [Edit]
Genus ? Allium
Specific epithet ? acuminatum
Common names
Tapertip onion (United States)
IPNI details on Allium acuminatum
References [edit] ?

Plant added by plantdatabase

Allium acuminatum http://plantdatabase.co.uk/Allium_acuminatum
© Plant Database Ltd., 28th July 2014     Web: http://plantdatabase.co.uk     Email: mail@plantdatabase.co.uk
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