Psidium friedrichsthalianum grow and care – tree of the genus Psidium also known as Cas or Cas guava, Psidium friedrichsthalianum perennial evergreen plant, can grow in tropic, mediterranean or subtropical climate and growing in hardiness zone 10+.
Leaves color green in oval shape, flowers color green-white with five petal,
How to grow Psidium friedrichsthalianum – Cas growing and care:
Rich soil, organic matter, humus
How to care: Add fertilize at least once, when the plant bear fruits add water, put mulch to keep the soil moist, prune once a year and hard prune every 2 years
What is the best way to start growing?
Plant / Seed / Cutting / Air layer
Is it necessary to graft or use vegetative reproduction? No, but possible and if the fruits not good recommend to graft, possible also to graft Red strawberry guava on the same tree
Difficulties or problems when growing: Aggressive, invasive
Planting season: All year in hardiness zone 11b+, spring to autumn in hardiness zone 10b-11a, in colder climate in spring to summer in hardiness zone 9-10a
How to plant: Dig hole bigger 50% more than the roots ball, add to the hole, organic matter, dead leaves and hummus put back some soil and mix it, after this put the tree cover lightly but strong enough that won’t fall put support for the tree if needed, if the tree is not stable consider to prune, water it twice in the first day and every day for two weeks.
Pests and diseases: Aphids, mealy bugs, scale insects, borers, white flies, thrips
Pruning season: End of the summer and end of the winter, better to prune after the fruits
How to prune:
Cut the tree in a way that it will be easy to cover it and easy to pick up, better to pick up the fruits when fully ripen it will be sweeter
Size of the plant: 2-7 m, 6-21 feet
Growth speed in optimal condition: Medium growing in the right condition can be fast growing plant
Water requirement: Average amount of water to big amount of water
Light conditions in optimal condition for growing: Full Sun
Is it possible to grow indoor as houseplant? No
Growing is also possible in a planter /flowerpot / containers: Yes, start with pot that will be 20% more than the root ball, every time that the tree arrive to full capacity need to switch to bigger until arrives to desirable size, it will bear fruits also in 25gallon (94 liter) container not a lot and bigger is better, better to use this method because the soil lose the viability over time and it’s efficient of care for the tree, when the plant big need to switch part of the soil, drainage it’s important and need to make holes and to use peat soil and maybe some lava grit in the bottom or something like that, put a bottom for the container and when water the plant let it fill the bottom but also need to dry in the same day, better when it’s grow in container to grow it as shrub, better to graft the tree or start from air layering will ensure the fruits.
Blooming information
Bloom season: Spring / Summer (in hardiness zone 12+ can bloom most of the year)
General information about the flower White flowers
Pollination is done by: Bees
Edible fruits
Fruit harvest season: Summer to autumn (in hardiness zone 12+ can bloom most of the year)
Fruits pests or diseases: Fruit fly (a lot of time the eggs of the fruits fly die in the fruits because of the acidity, birds
What can be done with big quantities of Psidium friedrichsthalianum fruits? Juice, Eat raw, ice-cream
Work requirements on the fruit: Cover with net or traps for fruit fly
How long does it take to bear fruit? 2-4 year
Scientific name:
Psidium friedrichsthalianum
Alternative names: Cas guava, Cas tree, Psidium friedrichsthalium, Costa Rican guava
