Your tree is likely an ornamental cherry—bred for flowers, not fruit flavor. Adding a pollinator won't change the fruit's taste; it's genetically determined.
To identify the exact cultivar, take a branch to your LA Master Gardeners or LA County Cooperative Extension. Cloning the tree (cuttings) just gives you another ornamental cherry.
Bradford Pear Fruit: Inedible, Not a Wildlife Magnet
Planting Eucalyptus Near Citrus and Apple Trees: Competition Risks
Eucalyptus Stump Near Orange Tree: Root Competition Stunted Growth—Remove Stump, Replant
My Hilarious (and Painful) DIY Fruit Tree Pruning Disaster
How to Ensure Good Pollination in Pear Trees
Why Seed-Grown 'Pink Lady' Apples Are Tiny
Fruit Trees Arrive at Urban Roots: Columnar, Espalier & Dwarf Varieties
Persimmon Seedling Timeline: Fruiting Age and Pollination Biology
Why Wild Persimmon Trees Don't Fruit: Sex Ratio
Why Apple Trees Fail to Fruit: Nitrogen, Weeds, Frost, and Pollinators
Pomegranate Propagation in Mexico: Seeds vs. Cuttings
Diagnosing Two Problem Trees: Borer and Canker
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