Triple Crown Blackberry

Rubus 'Triple Crown'

Water
Water deeply and regularly, keeping the root zone evenly moist but not waterlogged. Increase irrigation during fruit development and extreme heat; do not allow prolonged drying.
Toxicity
Description
A vigorous, thornless blackberry producing large, sweet black berries on second-year canes. Phoenix’s extreme summer heat and limited winter chill make this cultivar challenging to grow and fruit reliably.
Bloom Time
Deciduous / Evergreen
Special Features
Growth Rate
Flower Color
Foliage Color
Companion Plants
Toxicity
Non-toxic
Care Instructions

Light: Morning sun with afternoon shade in Phoenix; protect foliage and fruit from intense western exposure.

Water: Water deeply and regularly, keeping the root zone evenly moist but not waterlogged. Increase irrigation during fruit development and extreme heat; do not allow prolonged drying.

Soil: Fertile, well-drained soil enriched with compost; slightly acidic soil preferred, approximately pH 5.5–6.5. Phoenix’s alkaline soil may require amendments or a raised bed with suitable soil.

Mature size: Canes commonly reach 10–15 feet long; typically trained to a trellis approximately 5–6 feet tall, with 4–8 feet of lateral space per plant.

Bloom: White flowers in spring on overwintered second-year canes, followed by summer fruit if winter chilling is sufficient. Local timing and yield vary.

Evergreen / deciduous: Deciduous; leaf drop and dormancy may be incomplete in mild Phoenix winters.

Growth rate: Fast with adequate water, nutrition, and protection from extreme heat.