Is Ruby Red Grapefruit self-pollinating?

Ruby Red Grapefruit is self-fertile, though a pollination partner can improve cropping.

Citrus variety

Ruby Red Grapefruit

Also known as Ruby Red, Redblush

The short answer

Ruby Red Grapefruit is self-fertile^[1]. The sourced figures are below — where nothing is published we say so, and any estimate is clearly labeled as ours.

Growing facts

Ruby Red Grapefruit growing facts
Chill requirement	None — citrus trees don’t need winter chill
Hardiness	Not published for this variety
Pollination	Self-fertile^[1]
Harvest window	October–May^[1]
Years to bearing	Not published

Ruby Red Grapefruit citrusSpecies illustration — no historical watercolor exists for this cultivar

Notes

Red-fleshed grapefruit; nearly seedless (0-6 seeds).^[1]
Fair cold hardiness; needs substantial heat to develop full sweetness.^[1]
Protect below about 28F.^[2]

A year with your Ruby Red Grapefruit

When the work happens for a citrus in USDA zone 6, anchored to typical frost dates.

Months for pruning, thinning, spray-timing windows, and harvest for Citrus in zone 6
Task	J	F	M	A	M	J	J	A	S	O	N	D
Prune	—			—	—	—	—	—	—	—	—	—
Spray timing	—	—	—				—	—	—	—	—	—
Harvest	—	—	—	—	—	—	—	—	—	—	—	—
Care	—								—	—	—	—

See the full month-by-month citrus calendar for zone 6 →

Growing a Ruby Red Grapefruit? Get its care calendar for your exact ZIP code, starting with this month’s tasks for one tree, free.

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Questions

Is Ruby Red Grapefruit self-pollinating?: Ruby Red Grapefruit is self-fertile, though a pollination partner can improve cropping.

Sources

[1] Texas A&M AgriLife Extension (Aggie Horticulture). Table 1. Characteristics of common Texas citrus varieties — accessed July 2026
[2] Four Winds Growers. Citrus Variety Info Chart — accessed July 2026