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Triteleia grandiflora - Lindl.

Common Name Wild Hyacinth, Largeflower triteleia, Howell's triteleia
Family Alliaceae
USDA hardiness 4-8
Known Hazards None known
Habitats Dry to moist soils, often in rocky areas, meadows, or open woods of valleys, hills and in mountains to about 2700 metres[212].
Range Western N. America - British Columbia and south to Oregon and Utah.
Edibility Rating    (4 of 5)
Other Uses    (0 of 5)
Weed Potential No
Medicinal Rating    (0 of 5)
Care (info)
Fully Hardy Well drained soil Moist Soil Full sun
Triteleia grandiflora Wild Hyacinth, Largeflower triteleia, Howell
Triteleia grandiflora Wild Hyacinth, Largeflower triteleia, Howell


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Physical Characteristics

 icon of manicon of bulb
Triteleia grandiflora is a BULB growing to 0.7 m (2ft 4in).
It is hardy to zone (UK) 5 and is not frost tender. It is in flower from May to July. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects.
Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils. It cannot grow in the shade. It prefers dry or moist soil.

UK Hardiness Map US Hardiness Map


Brodiaea douglasii. Wats.


 Cultivated Beds; East Wall. By. South Wall. By.

Edible Uses

Edible Parts: Root
Edible Uses:

Bulb - raw or cooked[207, 257]. A sweet nut-like flavour[212], they can be used like potatoes. Said by some people to be the tastiest of the North American edible bulbs[207]. At their best when slow roasted for an hour when they become rather sweet[183]. Young seedpods - cooked as a potherb[183, 207]. An excellent green[212].


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.

None known


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Other Uses

None known

Special Uses

Food Forest


Cultivation details

Requires a rich well-drained sandy loam[1]. Likes plenty of moisture whilst in growth followed by a warm dry period in late summer and autumn[200]. Succeeds outdoors in a very sheltered warm position. Plants grow in patches in the wild and these can cover considerable areas[212]. For polyculture design as well as the above-ground architecture (form - tree, shrub etc. and size shown above) information on the habit and root pattern is also useful and given here if available. The plant growth habit is a clumper with limited spread [1-2]. Ephemeral emerging in spring and dying back by summer every year [1-2]. The root pattern is a corm swelling at the stem base [1-2].


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Seed - best sown as soon as it is ripe in a cold frame. Alternatively, the seed can be sown in spring in a cold frame. Germination usually takes place within 1 - 3 months at 15°c. Sow the seed thinly so that there is no need to prick them out and grow the seedlings on in the pot for their first year. Give an occasional liquid feed to ensure that they do not become mineral deficient. Seedlings are prone to damping off so be careful not to overwater them and keep them well ventilated. When they become dormant, pot up the small bulbs placing about 3 in each pot. Grow them on in the greenhouse for another year or two until the bulbs are about 20mm in diameter and then plant them out into their permanent positions when they are dormant in the autumn. Division of flowering size bulbs in autumn. Dig up the clumps of bulbs, replanting the larger ones direct into their permanent positions. It is best to pot up the smaller ones and grow them on in a greenhouse for a year before planting them out when they are dormant in early autumn.

Other Names

If available other names are mentioned here

Found In

Countries where the plant has been found are listed here if the information is available

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 NameCommon NameHabitHeightHardinessGrowthSoilShadeMoistureEdibleMedicinalOther
Triteleia hyacinthinaHyacinth Brodiaea, White brodiaeaBulb0.7 4-8  LMNDM30 
Triteleia ixioidesPretty Face, Cook's triteleia, Golden brodiaeaBulb0.6 6-9  LMNDM30 
Triteleia laxaGrassnut, Ithuriel's spearBulb0.5 6-9  LMHNDM40 
Triteleia peduncularisLongray Tripletlily, Long-ray brodiaeaBulb0.3 5-9  LMNDM30 

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.


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