Ruby Red Grapefruit Tree

Ruby Red grapefruit is a vigorous evergreen citrus tree valued for its pink-to-ruby flesh and sweet-tart fruit. It needs a warm, sunny, frost-protected site to mature a reliable crop. ## Selection and size [Texas A&M AgriLife](https://aggie-horticulture.tamu.edu/fruit-nut/fact-sheets/citrus/table-1-common-texas-citrus-varieties/) lists Ruby Red among common Texas grapefruit varieties. The exact [Ruby Red product profile at Trees.com](https://www.trees.com/products/rubyredgrapefruit) gives a mature height of 15–20 feet and width of 8–10 feet, matching this record’s displayed ranges. A Phoenix-area [nursery profile](https://threetimbersshop.com/products/ruby-red-grapefruit) identifies Ruby Red as Citrus paradisi and lists outdoor USDA zones 9–11; it reports a broader potential width, so the catalog’s existing width is retained against the exact product profile rather than generalized from a different growing region. ## Siting and fruit Grow outdoors in USDA zones 9–11, with full sun and well-drained soil. Trees.com notes that grapefruit may be grown in containers in colder climates if protected indoors during winter. Ruby Red is self-pollinating, though Trees.com reports that another tree can improve crop size. Texas A&M lists the variety’s harvest period in its Texas citrus table; actual timing depends on climate. ## Maintenance Water regularly during establishment and hot, dry periods, then let the soil drain between watering. Feed with a citrus fertilizer according to its label and prune lightly to remove damaged branches or maintain access. Protect the canopy from frost and avoid planting in waterlogged soil.