How do I care for a grapefruit tree?

FAQ
Question: 

How do I care for a grapefruit tree?

Answer: 

Grapefruit and several other types of citrus can be grown indoors in Iowa.  Indoors, place citrus plants in a sunny south or west window.  Water plants regularly when growing in spring and summer, less often in winter.  In spring and summer, fertilize plants with a dilute fertilizer solution every 2 to 4 weeks.  Do not fertilize during winter.  If possible, place citrus plants outdoors in spring (mid- to late May in Iowa).  Plants will need to be acclimated to outdoor conditions.  Initially, place plants in a shady location.  After 2 or 3 days, move the plants to an area that receives 1 to 2 hours of sun.  Gradually increase the amount of sun the plants receive over a period of several days.  After 7 to 10 days, the plants should be properly acclimated and should remain in a sunny location.  Plants should be brought back indoors in early to mid-September.  

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