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Mountain Hemlock
Tsuga mertensiana
High-altitude conifer with silvery needles; elegant but slower-growing; best for upright styles.
The year, as this species lives it
Thirteen phases. Touch any arc — the wheel remembers what each season asks.
Mid Summer · Jul 1 – Aug 10 · happening now
A quiet season — observe, water thoughtfully, and let it be.
click another arc to travel the year →
The care sheet
The constants — what stays true in every season.
Full sun to partial shade
Tolerates more sun than other Tsuga but still benefits from shade.
Moderate
Moisture retention critical; mulching is beneficial.
Balanced
Balanced feed early and late in season; avoid midsummer feeding.
Maintenance throughout growing season; structural in spring
Best pruned after flush hardens; avoid deep cuts into bare wood.
Spring or Autumn
Thin bark - pad wire carefully and adjust seasonally.
Every 3-5 years
Repot in cool weather; mist frequently afterward.
Cuttings or seed
Slow to root; air layering preferred for mature specimens.
Hardy, but prolonged freeze can damage fine root tips.
Water early in the day; maintain high ambient humidity.