White Marsh was discovered in Florida as a spontaneous seedling in 1860.Because the fruit of the three original seedlings were seedless the new variety was propagated in a nursery and White Marsh soon became the most popular new cultivar to be planted.
The fruit is almost completely round, very juicy and rich in flavour.
Compared to other grapefruit varieties, Star Ruby is more difficult to grow well. It has exhibited greater susceptibility to phytophthora, nutrient deficiencies, cold temperatures, and pest problems. It does not appear to grow as vigorously as other grapefruit varieties, and the fruit is often smaller. Nevertheless, when grown well, Star Ruby produces attractive red-blushed fruits with a smooth yellow rind. The flesh is very darkly-pigmented, juicy, and low-seeded or seedless. Star Ruby’s season of maturity is mid to late-season, and the fruit holds well on the tree with some loss of flesh color as the season progresses.
The tree grows vigorously to a large size. Plantings of Rio Red grapefruit have performed quite well in the Coachella Valley desert region, where it receives the high heat necessary to produce high-quality fruit. The fruit is large, with a slightly pebbled surface. The rind frequently has a pink blush, especially where two fruits grow against each other. The flesh is juicy and well-pigmented, with the darkest color next to the segment membranes. Rio Red is mid to late-season in maturity.
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