Flame Red Grapefruit

Citrus × paradisi 'Flame'
Categories:
Citrus  ·  
Grapefruit & Pummelo
Light
Full sun
Water
Deep, regular irrigation; not drought tolerant. For established trees, wet soil 2–3 feet deep beneath and just beyond the canopy, then allow the upper few inches to dry. Water more frequently in summer and less in winter; newly planted trees need closer monitoring.
Size
15-20 ft tall × 15-20 ft wide
Habit
Upright tree – single-trunk
Toxicity
Toxic — Pets & Humans
Description
A heat-loving grapefruit cultivar producing large, yellow-skinned fruit with a pink blush and juicy, deep red flesh. Fruit is sweet-tart and generally has few seeds.
Bloom Time
Spring (March to April)
Deciduous / Evergreen
Evergreen
Special Features
Edible, Fragrant
Growth Rate
Moderate
Growth Habit
Upright tree – single-trunk
Mature Size
15-20 ft tall × 15-20 ft wide
Flower Color
White
Foliage Color
Dark green
Landscape Use
Container / Patio, Edible / Orchard, Shade Tree, Specimen / Accent
Garden Style
Edible Garden
Soil
Alkaline Tolerant, Sandy / Rocky, Well-Drained
Companion Plants
Cool-season calendula, Nasturtium, Sweet alyssum
Toxic — Pets & Humans
Fruit edible for humans; peel, leaves, and seeds toxic to pets
Care Instructions

Light: Full sun, ideally 8 or more hours daily. Young trees benefit from temporary afternoon shade during extreme Phoenix summer heat.

Water: Deep, regular irrigation; not drought tolerant. For established trees, wet soil 2–3 feet deep beneath and just beyond the canopy, then allow the upper few inches to dry. Water more frequently in summer and less in winter; newly planted trees need closer monitoring.

Soil: Well-drained sandy loam or loam. Tolerates mildly alkaline soil, but Phoenix soils may cause micronutrient deficiencies. Avoid standing water and keep the root flare above finished grade.

Mature size: Typically 15–25 feet tall and 15–20 feet wide on standard rootstock; dwarfing rootstocks and pruning can keep trees smaller.

Bloom: Fragrant flowers primarily in spring, usually March–April in Phoenix. Fruit typically ripens from winter into spring.

Evergreen / deciduous: Evergreen.

Growth rate: Moderate to fast with adequate irrigation and appropriate citrus fertilization.