The Black Tartarian is a full-sun sweet cherry suited to USDA zones 5–8. It grows to about 15 ft. tall and 10 ft. wide, so it is an in-ground tree for most gardeners — give it an open, sunny spot with room for its upright canopy.
Planting
- Choose a site in full sun (at least 6–8 hours daily) with good air circulation and deep, well-draining soil; cherries resent wet feet.
- Dig a hole twice as wide as the root ball but no deeper, loosening the sides so roots can spread.
- Set the tree so the graft union sits 2–3 inches above the soil line — never bury the graft, and avoid planting too deep.
- Backfill with native soil, firm gently to remove air pockets, and water in thoroughly to settle the roots.
- Apply 2–3 inches of mulch over the root zone to hold moisture, but pull it back several inches from the trunk to prevent rot.
Care & maintenance
- Water. Keep the soil evenly moist during the first two growing seasons; once established, water deeply during dry spells and as fruit swells, but avoid waterlogged ground.
- Feed. Apply a balanced fruit-tree fertilizer in early spring before growth begins; avoid heavy nitrogen late in the season, which pushes soft growth at the expense of fruit.
- Light & temperature. Full sun is essential for sweetness. The tree is hardy in zones 5–8 and needs a winter chill period to set fruit; protect early blossoms from late frosts where possible.
- Prune. Prune in late summer or in dry winter weather to maintain an open vase or central-leader shape; remove dead, crossing, or crowded wood and keep the center open to light and air. Avoid pruning in wet weather to reduce disease risk.
- Pollinate. Black Tartarian is not self-fertile — plant a compatible second sweet cherry variety nearby (such as Bing, Stella, or Rainier) for good fruit set. It is itself an excellent pollinator for other sweet cherries.
- Pests & disease. Watch for birds (the main competitor at harvest), cherry fruit fly, aphids, and fungal issues like brown rot and bacterial canker; good airflow, clean-up of fallen fruit, and dry-weather pruning go a long way.
- Harvest. Fruit ripens in June. Pick when cherries are fully dark, glossy, and sweet — taste-test rather than rushing, as cherries do not sweeten further once picked.