Meyer lemon trees are dwarf citrus trees that are hybrids of lemons and mandarin oranges. Producing sweet lemons and growing to only 5 feet tall and 4 feet wide, Meyer lemon trees have become popular container-grown citrus for colder climates. You can grow Meyer lemon trees in the ground as well, if you live in a warmer region like in USDA Hardiness Zones 8 through 11, where winter temperatures don't drop below freezing. Meyer lemons are engineered to be free of pests and diseases.
Water your one-year-old Meyer lemon tree two to three times per week throughout the summer, delivering about 5 gallons of water per week. Soak the soil around the root ball thoroughly. Water the lemon tree in spring and autumn once or twice per week when rainfall is less than 1 inch per week.
Feed your young Meyer lemon tree once each year in spring with a slow-release citrus tree fertilizer that has an NPK (Nitrogen-Phosphorous-Potassium) ratio of 3:1:1. Follow the dosage rates indicated on the fertilizer package.
Apply a foliar spray containing trace minerals, such as a kelp spray, to your one-year-old Meyer lemon tree in spring, when the leaves are about half their full size. Follow the application directions on the label.