Strange combinations of Nature: how did an onzuka end up in the pot of an old Thelocactus?

Semina spontanea onzuka

When many plants are grown in a relatively small space such as that offered by a greenhouse (however wide it can be), it can often happen to discover welcome surprises in the pots. Cacti whose flowers have been pollinated naturally by insects or self-fertile cacti, capable of doing everything by themselves, produce fruits which, once dry, split letting the seeds fall directly onto the soil at the base of the plant. This is how one can find specimens of a certain age surrounded by seedlings or small plants, in a sort of “potted” re-proposition of what commonly occurs in nature. In spite of what one might think by observing the precise procedures necessary for the reproduction of cacti, spontaneous sowing is a common phenomenon in cacti and is sometimes able to give real surprises, as has happened to me these days.

Here is a small report in the following article. (…)

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