Toka is a full-size plum tree hardy in zones 3 through 8, maturing to 15 to 20 feet tall and wide. It is best grown in the ground with room to spread; give it an open, sunny spot where its spring bloom and summer crop have space to develop.
Planting
- Choose a site in full sun (at least six hours daily) with good air movement to reduce disease pressure.
- Plant in well-draining soil; plums dislike wet feet, so avoid low spots where water pools.
- Dig the hole twice as wide as the root ball but no deeper, loosening the surrounding soil.
- Set the tree so the graft union sits a few inches above the soil line — never bury it. Backfill with native soil and water in deeply to settle out air pockets.
- Spread 2 to 3 inches of mulch over the root zone, keeping it pulled back several inches from the trunk to prevent rot.
Care & maintenance
- Water. Keep the soil evenly moist the first two seasons; once established, water deeply during dry spells and while fruit is sizing.
- Feed. Apply a balanced fruit-tree fertilizer in early spring before growth begins. Avoid heavy late-season feeding, which pushes tender growth into winter.
- Light & temperature. Full sun produces the sweetest fruit. Toka is hardy to zone 3, so it needs no special winter protection across its range.
- Prune. Prune in late winter while dormant, training to an open-center (vase) shape to let light and air into the canopy and remove crossing or dead wood.
- Pollinate. Toka is an excellent pollinator for others but sets best with a compatible second Japanese or American plum nearby, so plant a partner variety within about 50 feet for a full crop.
- Pests & disease. Watch for plum curculio, aphids, and brown rot. Good airflow, clean-up of dropped fruit, and dormant sprays keep most problems in check.
- Harvest. Fruit ripens in July. Pick when the plums color up, soften slightly, and pull free with a gentle twist.