It is not that easy to start any Citrus from seed, I have started 1 but it had already sprouted in the grapefruit. The drawback
From starting any fruit from seed is they never come true, that means there never liked the original fruit, sometimes you will get something better, but usually it’s not even worth eating.
If you should happen to get 1 going and find out it has a lousy fruit, you can always graft a good Citrus to it, in fact you could do several different ones on 1 tree.
I have a grapefruit that was started from seed, I do not know the variety. It is about 18 inches in height now and pretty healthy. The leaves are like a double leaf, in that there is a smaller section near the stem then a larger leaf beyond that. Currently it is in a 4-6 inch pot indoors, but it is exceeding it’s home now. I can’t just let it die so I would like to know how to care for it and help it live.
I found this article after a search. Hope this helps:
Here is one way to do it:
By Ron from Cortez, CO
Once the seed germinates and the seedling starts to grow, wait until it develops it first true set of leaves (usually the second set of leaves that appear) before transplanting it to a bigger pot. The pot does not need to be too big to start with, just make sure the soil mixture you use provides plenty of drainage.
Ask a Question Here are the questions asked by community members. Read on to see the answers provided by the ThriftyFun community or ask a new question.
By Gale Sequeira from San Rafael, CA
For some cold weather greenery that will brighten the house and last all winter, try filling a flat pan with rich dirt and thickly planting the container in grapefruit seeds buried one half inch deep. Keep the earth well-watered. The seeds will be slow to sprout but will be worth waiting for.
Growing Grapefruit from Seed Solutions Share on ThriftyFun This page contains the following solutions. Have something to add? Please share your solution! Tip: Plant Grapefruit Seeds
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.
Position the pots near a south- or west-facing window with roughly four hours of direct sunlight each day. Maintain temperatures between 60 and 70 F. In winter, temperatures must stay above 40 F.
Soilless potting medium
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.
Grapefruit seeds go dormant if they dry out. Soak them in clean, room temperature water for 24 hours before sowing to revive them.
Watch for the first grapefruit seedlings in two to three weeks. Remove the plastic after they emerge, and move the pot to a bright, sunny spot indoors near a lightly shaded south-facing window.
Grapefruit seedlings with undesirable fruit can still be enjoyed for their highly fragrant, waxy white flowers.
Grapefruit seeds can be started any time of year, although they perform best when started in spring as the days lengthen and the weather warms.
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.
Grapefruit trees sprout easily from seeds, although the seedlings lack the same fruit quality as commercially grown trees.