subalpine larch
Larix lyallii · Pinaceae
subalpine larch (Larix lyallii) is a perennial tree in the Pinaceae family. It is native to North America. USDA records it as hardy in zone 1 and warmer, down to about -58°F.
At a glance
| Type | tree USDA |
|---|---|
| Lifecycle | perennial USDA |
| Native status | native USDA |
| Mature height | 40 ft USDA |
| Light | full-sun USDA |
| Water need | low USDA |
| Growth rate | slow USDA |
| Soil pH | 3.9–5.6 USDA |
| Bloom | May–June USDA |
| Flower color | Yellow USDA |
| Hardiness zones | 1 and warmer USDA |
| Guild layer | canopy Derived |
| Nursery availability | Contracting Only USDA |
USDA quoted from the USDA PLANTS database · Derived computed by a fixed rule from those columns. No value on this page is estimated.
Growing conditions
It needs full sun. USDA rates it as having low water needs once established. Its drought tolerance is rated high. It will not tolerate waterlogged soil — USDA rates its anaerobic tolerance as none. It is recorded on soils from pH 3.9 to 5.6 — acidic ground. Its cold limit is zone 1.
Size and growth
At maturity it reaches about 40 ft, making it a substantial woody plant. It grows slowly.
Bloom period
USDA records a bloom period of May through June. Flowers are yellow.
A flowering date, not a pollinator rating.
Foliage, flower and season
Summer foliage is green, fine in texture. Its flowers are not conspicuous — a plant for form and foliage. It carries conspicuous autumn colour. Its active growth period is summer. USDA rates its lifespan as long.
What the site needs to provide
USDA records it across sites receiving 26 to 95 inches of annual precipitation. It needs at least 90 frost-free days to finish its season. It roots to at least 36 inches. Fertility requirement: low — no feeding needed on ordinary garden soil.
Propagating it
Propagate it from seed, bare root and container stock. USDA records no cold-stratification requirement, so seed should germinate without a chilling period. Its seed spreads at a slow rate. It does not spread vegetatively, so it will stay where you put it.
Resilience and wildlife
Browsing animals find it moderately palatable, so expect deer and rabbits to take an interest. Its fire tolerance is rated low. Its growth form is recorded as single stem.
Role in a guild
Canopy. In a layered planting this is the tallest layer of a planting — it sets the light budget everything beneath it lives on. The layer is derived by a fixed rule from growth habit and mature height.
Tags
Related plants
Others in Larix
- European larch Larix decidua
- Japanese larch Larix kaempferi
- tamarack Larix laricina
- western larch Larix occidentalis
Similar role and hardiness
- paper birch Betula papyrifera
- lodgepole pine Pinus contorta
- white spruce Picea glauca
- black spruce Picea mariana
- balsam poplar Populus balsamifera
Where this data comes from
Every value on this page comes from the USDA PLANTS database record for symbol LALY, or is computed from those values by a fixed rule. Nothing here is estimated or model-generated. Where USDA publishes no value, this page omits the claim rather than filling the gap.
- Quoted from USDA PLANTS: active growth period, Bloom, Bloom end, browse palatability, cold stratification, Drought tolerance, fall conspicuous, fertility requirement, fire tolerance, Flower color, flower conspicuous, foliage color, foliage porosity winter, foliage texture, frost free days min, fruit conspicuous, growth form, Growth rate, Hardiness zones, Lifecycle, lifespan, Light, Mature height, Minimum temperature, Native status, Nitrogen fixation, Nursery availability, precipitation max in, precipitation min in, propagation, resprout ability, root depth in, seed spread rate, Soil pH, Soil pH (upper), Tolerance of wet soil, Toxicity, Type, vegetative spread rate, Water need.
- Derived by a fixed rule from those columns: Guild layer.
Read our full data sources and methodology.
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