Larix gmelinii var. olgensis

Character & interest

This larch stands out for its “four-season conifer” behavior: soft foliage in spring, a light green mass in summer, then a luminous yellow late-season display. It is well suited to cold conditions and sites that remain moderately moist. In climates that are too hot and humid in summer, it performs much less satisfactorily.

Colours

• Spring–summer : bright green needles (in clusters on short shoots).

• Autumn : yellow (sometimes yellow-orange) before needles fall.

• Winter : bare silhouette, graphic twigs and persistent cones.

Habit & vigour

When young, a conical habit with rather horizontal branches; with age, the tree can become broader and more “sculptural”. Moderate to good vigor under suitable conditions (moist soil, non-scorching summers). Young shoots are often described as tawny-brown and hairy, and cones as slightly larger than in the typical form.

Indicative size

Indicative ranges cited for cultivation:

• about 12 to 27 m tall

• 4.5 to 9 m spread

• in the wild, some larches in the gmelinii group can exceed these figures depending on site. gmelinii peuvent dépasser ces valeurs selon station.

Exposure

Full sun (tolerates light partial shade, but avoid dense shade). Choose an open, airy position, without excessive summer heat.

Origin & history

A Northeast Asian taxon, native notably to Russia (Primorye / Russian Far East), North Korea, and parts of Northeast China (Manchuria; provinces vary by source). It is sometimes treated not as a variety but as a distinct species: Larix olgensis.
The name “Olga Bay larch” refers to the Olga Bay area (Russian Far East), often cited as an emblematic region for this taxon.