How to grow Grapefruit 'Ruby Red'
Keep in mind when planting that Ruby Red is thought of as half hardy, so protect with a row cover whenever the temperatures drop.
Growing Ruby Red from seed
Try to ensure a gap of at least 13.00 feet (4.00 metres) when sowing to prevent overcrowding your seedlings. Soil temperature should be kept higher than 60°C / 140°F to ensure good germination.
Transplanting Ruby Red
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Ruby Red is a half hardy plant.
Harvesting Ruby Red
Footnotes