All varieties of grapefruit grow in U.S. Department of Agriculture plant hardiness zones 9 through 11, although most cultivars will also grow in zone 8b once established.
Lift the plastic wrap and water the grapefruit seeds whenever the soil feels dry on the surface. Add water slowly to avoid dislodging the seeds. Keep the soil moist in the top 1 inch or so. Put the plastic wrap back in place after watering.
Grapefruit seedlings grow slowly, but they still need the right conditions and plenty of space to spread out as they mature.
Small plastic pot
Grapefruits fall into two categories: white-fleshed and red-fleshed. Common white-fleshed varieties include the ‘Duncan’ grapefruit (Citrus x paradisi ‘Duncan’), which is a seedy variety with 30 to 50 seeds in each fruit. Red-fleshed varieties include ‘Ruby’ (Citrus x paradisi ‘Ruby’), which is a common grapefruit at supermarkets. ‘Ruby’ is a seedless variety, which means it has six seeds or fewer per fruit.
Move the pots outdoors to a sheltered area with bright, diffuse light in spring of their second year. Keep them watered as before, and feed every two weeks with 1/2 teaspoon of water-soluble, 10-10-10 fertilizer diluted in 1 gallon of water. If yellow leaves appear, reduce feeding frequency by half.
Soilless growing medium
Keep the soil evenly moist, but let the surface dry out between waterings to reduce the risk for root diseases. Water until the excess drains from the bottom of the pot.
Fill the pot to within a 1/2 inch of the top with sterile, soilless potting medium, or create your own by combining equal parts milled peat moss and half perlite or medium-grain sand. Saturate the mix with water and let the excess drain off for 15 minutes before sowing.
Grapefruit trees sprout easily from seeds, although the seedlings lack the same fruit quality as commercially grown trees.
Pour water into the hole until it is approximately 1/2 full. Finish filling the hole with soil after the water has dissipated.
Water the grapefruit tree thoroughly. Water the grapefruit tree every two or three days for the first three weeks after planting. Then water every two weeks for the next two or three months.
By: Katelyn Lynn
Place the grapefruit seeds in a single layer into a bowl that contains about 1 inch of water. Soak the seeds for 24 hours.
Transfer the pot to where there is a strong light source for 10 to 12 hours a day once the seeds sprout. Allow the compost to dry out some before watering.
Set the grapefruit tree into a planting hole. The top of its root system needs to be sitting about 1 inch above the surrounding soil.
21 September, 2017
Transfer soil from another area in your garden to create a 3- to 4-inch high ring of soil that is about 24, inches in diameter as suggested by Julian W. Sauls, professor and extension horticulturist at Texas A&M.
Place the pot into a warm location where the temperature will stay between 75 and 80 degrees F. Mist the compost with water as needed to keep it moistened. Germination of grapefruit seeds can begin in as little as 1 to 2 weeks but can require as long as 30 days.
Grapefruit trees (Citrus paradisi) are the end result of the possibly unintentional crossing of the sweet orange with the pummelo. They grow tall, with several varieties reaching 50 feet in height. Grapefruit trees produce semi-sour fleshy fruit that is high in both Vitamin C and fiber. Although believed to have …