| Common Name | Tamarack / Eastern Larch |
| Botanical Name | Larix laricina |
| Family | Pinaceae |
| Plant Type | Deciduous conifer |
| Hardiness Zone | 2-5 (thrives in Zone 5b) |
| Mature Size | 40-60 ft tall, 15-30 ft wide |
| Sun Exposure | Full sun (6+ hours) |
| Soil Preference | Moist, acidic, well-drained; tolerates boggy conditions |
| Fall Color | Brilliant golden yellow |
| Native To | North America |
| Deer Resistant | Yes |
| Wildlife Value | Seeds feed birds; nesting habitat |
Why Tamarack for Wisconsin
Tamarack is native to northern Wisconsin and perfectly adapted to our climate. It thrives in wet, low-lying areas where many other trees would struggle or die. The standout feature is the fall color: brilliant golden yellow needles that glow in October sunlight before dropping. It’s one of the most striking fall displays you can get from a conifer.
Because it’s a deciduous conifer (it drops its needles each fall), people sometimes think it’s dying the first year. It’s not. That’s just what it does.
Planting Instructions
When: Spring (April to May) while dormant or just breaking dormancy.
Where: Full sun. Naturally grows in bogs and wet meadows, so moist or poorly drained areas are fine. Avoid exposed, windy sites because of its shallow root system.
How: Plant at the same depth as the root ball. In wet sites, no amendments needed. In average garden soil, keep it consistently moist for the first few years. Mulch generously.
Care Throughout the Season
Spring: Fresh needles emerge in small, soft clumps along the branches. Light green and delicate. No action needed.
Summer: Water during dry periods, especially younger trees. Tamarack is adapted to moist conditions and won’t tolerate extended drought well.
Fall: The needles turn golden yellow, then drop. This is normal for this species. Enjoy the show.
Winter: The bare branches have a fine, architectural quality. No maintenance needed.
Common Problems in Wisconsin
Larch sawfly: The most significant pest. Larvae feed on needles in late spring and early summer. Heavy infestations can defoliate a tree, though healthy trees usually recover. Monitor and treat if populations are large.
Drought stress: This is a wetland tree at heart. Extended dry periods in average garden soil can cause stress. Deep watering during drought is important.
Wind throw: The shallow root system means tamarack can blow over in strong winds, especially in saturated soil. Don’t plant in exposed, windy locations.
Companion Planting
Red Twig Dogwood provides winter stem color after the tamarack drops its needles. Winterberry Holly adds red berries in fall/winter. Joe-Pye Weed fills the moist ground nearby with late-summer flowers. Blue Flag Iris works in wet areas at the base. Sedges (Carex) make natural groundcover companions in moist sites.
Design and Landscape Uses
Tamarack is the tree for that wet spot in your yard where nothing else will grow. It also works in rain gardens, along pond edges, and in naturalized landscapes. The golden fall color makes it a standout focal point. Plant several for a grove effect. At 40-60 feet, give it room. This is not a small-space tree.
Fun Fact
Tamarack is one of a small group of deciduous conifers, trees with needles that drop every fall. Others in this group include Dawn Redwood, Bald Cypress, and Ginkgo. First-time tamarack owners often panic in October, thinking the tree is dying. It’s perfectly healthy. The needles come back every spring.
Tamarack is available at our nursery.
The tree for wet sites and stunning fall color. Come see it in person.