Psidium guajava or guava, native from Mexico to Peru, is a small tree with curious 4-angled branches and peeling bark. Their size is easily controlled in containers. In nature, they will reach a height of 12-14 feet. Ours in the greenhouse is only 4 foot tall in a 5 gallon container at 10 years old.
Blooming Time: Spring-Summer: The white blooms are 2½ inches across and usually last one day. Small fruit that are about 2 inches in diameter follows them. The fruit is used to make preserves.
Culture: Psidium guajava need full sun to partial shade with a rich well-drained soil. We use a soil mix consisting of 2 parts peat moss to 2 parts loam to 1 part sand. The plant is kept moist during the growing season. Fertilize weekly with a balanced fertilizer. During the winter rest period the temperatures should be kept at 55°-60° F. If the temperatures fall below 55°, the plant will lose it leaves. Trimming and repotting should be done in early spring before new growth starts.
Propagation: Psidium guajava are best propagated from seed. Seeds usually germinate in 7-14 days at 65° F.
Psidium guajava was featured as Plant of the Week July 20-26, 2001.
Guide to Past Plants-of-the-Week:
Cal's Plant of the Week was provided as a service by the University of Oklahoma Department of Microbiology & Plant Biology and specifically the late Cal Lemke, who used to be OU's botany greenhouse grower and an avid gardener at home as well. If the above links don't work, then try the overview site. You may also like to look at the thumbnail index. ©1998-2017 All rights reserved.