Blackberry fruit size - Knowledgebase Question

Bridgewater, Ne
Question by trust500
August 6, 2009
What is needed to increase the size of Triple Crown blackberry fruit when the leaves of the plants are nice and green? Organic solutions if possible. Thank you for your assistance. Laura

Answer from NGA
August 6, 2009


Plant maturity is closely associated with fruit size. It may be that your Triple Crown is not well enough established to produce huge fruit. If you're too impatient to wait, you can thin the fruit as it is developing. The fewer the fruit, the larger they will become. Best grown in moist, organically rich, slightly acidic, well-drained soil in full sun, Triple Crown plants are perennial but canes are biennial. For established shrubs, tip-prune new vegetative (non-fruiting) canes in summer. Immediately after fruit harvest, remove all canes that fruited to the ground. In late winter to early spring, remove any canes damaged by winter and thin the remaining canes to 4 or 5 strong, well-spaced canes. Best wishes with your Triple Crown!

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