The Ray Ruby Grapefruit tree is a pink to light red fleshed grapefruit, with a pink blushed skin, and is sweet and juicy, with a thicker peel than other grapefruits. Ray Ruby was found in Texas, as a mutation of the Ruby Red.
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AttributesType: Tropical, Tree, Fruit Bearing
Height: 12 ft - 14 ft
Spread: 8 ft - 10 ft
Light: Bright Direct
Zone: 8 - 10
Pet Safe: Mildly Toxic
CareGeneral Maintenance: A grapefruit tree needs to be keep warm year round, so if you are planting it, consider adding mulch, as well as bringing it in over winter.
Temperature: It can handle colder temperatures, but ideally will thrive in 25 to 30 degrees Celsius.
Light: Full sun. They require a minimum of 6 hours of sunlight per day to grow properly and have the possibility of bearing fruit.
Watering: Water your Ray Ruby regularly during the first year, providing 3 to 6 inches of water every three to seven days, or whenever the soil a few inches below ground becomes dry. Water directly under the tree's trunk the first year, so the root ball stays moist.
Soil: A well-draining, nutritious soil blend with a slightly acidic pH.
Fertilizer: Typically, fertilizers for grapefruit trees are well-balanced, having nitrogen, phosphorus and potassium in large, nearly equal amounts and a wide array of micronutrients. Diluted fertilizer once every 2-3 weeks during the growing season (April to August).