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Plant Informational Database

Cas Guava

Psidium friedrichsthalianum

a.k.a. Costa Rican Guava

Yellow fruit, 1-3" around, similar to the common guava but often very acidic.

Seed Availability

Seeds are not available for the Cas Guava. Please visit our seed store to view current selections. Seeds were last available in February 2015.


Small tree to 30+ feet. Growth habit is similar to the regular guava.


The cas guava is sometimes thought to be not as hardy as the tropical guava however mature trees seem capable of withstanding short frosts.

Growing Environment

Not available.


By seeds.

Germination Info

Guava seeds are of moderate difficulty to germinate. The most common stumbling block is not allowing enough time to pass for germination as guava seeds routinely need a minimum of 4-6 weeks before any possible germination. Plant seeds 1/4-1/2" deep in moist, sterile soil. Keep soil temperature consistent at 70-85F. Cool soils will significantly delay seed germination time and soil temperatures below 60-63F will inhibit germination altogether.

Estimated germination time under optimal conditions: 4-12 weeks, though occasionally longer. Seeds often show staggered germination.


Usually used to make jams, jellies, and preserves, or as a flavoring for drinks. The fruit is very acidic so it is generally not eaten fresh out of hand.

Native Range

Native range extends from southern Mexico to northern South America.

Additional Pictures

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