These same directions will work for kiwi, squash or melon seeds, olive pits, litchi nuts, whole Jerusalem artichokes and unsulphured date pits.
Plant seeds as soon as you remove them from the fruit. DO NOT LET THEM DRY OUT. Plant about 1/2 inch down in soil. Water well, then cover with plastic and place in bright light in a warm (75 degrees F to 80 degrees F spot).
In three to four weeks, the weed will germinate and glossy, fragrant plants will begin to develop. Leave plastic on until plants are a few inches high. Allow soil to dry somewhat between watering. Mist leaves occasionally, especially in hot, dry air. They thrive in cool, sunny spots. The plants should be repotted every year until they are in 8- to 10-inch diameter containers.
Note: If you are growing kumquats, keep the soil evenly moist.