tree not fruiting
ideas why a perfectly healthy plum tree flowers profusely, forms
tiny little plums and then they mostly fall off? I have long lost
the label, but it was supposed to be a self-pollinator. I have never
fertilised plum trees, but the grapefruit next to them is laden
(I fertilise the citrus regularly). Could I have a soil deficiency?
Is it potassium for fruit set?
reason the plum is not setting fruit is likely to be incomplete
pollination. Most plums require a pollinator. Some are self-fertile
but still require a pollinator. Incomplete pollination occurs when
there has been a wet spring (which we have had bees don't
work in the rain!), or frost at the crucial stage of fruit set.
You are correct in saying
potassium helps improve fruiting. Plums benefit from regular applications
of fertiliser. Once a year apply a general garden fertiliser after
flowering, which will help increase the fruit size.
Duffs Early Jewel is
a good pollinator for Japanese plums.
by Dr Dan Blanchon from Unitec's Diploma in Sustainable Horticulture and Bachelor
of Resource Management.
with permission from NZOOM Home and Garden content,
from the previous
The views expressed here are not necessarily those of the RNZIH