Tamarack

Larix laricina

Pinaceae · coniferous tree · introduced

Last updated March 8, 2026

Quick Facts

Height

65 ft

Growth Rate

Fast

Light

Full Sun

Soil

Wet Tolerant

Water

Moderate

Hardiness

Zones 1a–8b

Bloom Time

Non-flowering

Origin

from the Arctic Circle in Alaska and Canada (found in every Canadian province and territory)

Wood DecayHigh

Wound Infection Window

View full calendar (8 stages)

Stage	Typical Window	What to Look For
Bud break BBCH 07	Feb 15-Mar 15	Buds swelling and beginning to open; first green tissue visible
Needle emergence BBCH 11	Mar 1-Apr 1	Bright green needle tufts emerging on spur shoots
Pollen release BBCH 61	Apr 1-Apr 30	Male strobili (red) visible and shedding pollen; female strobili developing
Pollen shed complete BBCH 69	Apr 15-May 15	Male strobili dried and mostly shed; pollen dispersal complete
Cone development BBCH 71	Jun 1-Aug 31	Small upright cones enlarging on branch tips
Cone maturity and seed shed BBCH 85	Sep 1-Nov 30	Cone scales open; winged seeds dispersing; cones becoming brown
Needle senescence BBCH 93	Oct 1-Nov 15	Needles turning golden-yellow; fall color at peak
Needle drop complete BBCH 97	Nov 15-Feb 28	Tree fully deciduous; all needles dropped; bare branches visible

Data Maturity

Baseline Extension data. Expert review underway.