1. Planting:  Plant your Star Ruby Grapefruit where it can receive full sun. The more sun your tree gets, the more citrus it will produce. If you’re growing your tree indoors for some or all of the year, you may need to use grow lights. 

Choose acidic, well-draining soil in which to plant your tree. If you’re potting in a container, choose one that drains well.

Protect your tree from cold temperature changes as much as possible to prevent it from dropping its leaves. However, the Star Ruby Grapefruit can adapt to occasional frosts and cold temperatures.

2. Watering: Be careful with overwatering. Young trees only need to be watered once or twice per week. Also avoid outdoor sites where water pools and poorly-draining containers. If citrus tree roots are left in standing water, they are susceptible to root rot.

3. Fertilizing: Apply an acidic plant fertilizer to your tree three to four times per year.

4. Pollination: Our Star Ruby Grapefruit Trees are self-fertile, but you can pollinate your indoor trees by hand using a small, dry, fine-tipped paintbrush. Swirl the brush around the center of each bloom and collect the pollen on the brush. Go to the next bloom and repeat the process until every bloom has been treated, and repeat the process daily. Don’t wash the paintbrush until after the blooms have been pollinated. The blooms will fall and the fruit will begin to form.