Is there a tree that does not produce fruit?
The reason why some trees produce fruit and some not is due to their gender. The gender division in the plant kingdom is comparatively complicated:
- Some trees have blossoms with both male and female gender characteristics.
- Others have both all-male and all-female flowers at the same time.
- A third group is clearly divided into purely male and purely female trees.
also read
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- The yew tree does not bear cones, but fruit
What does this have to do with the formation of fruits? Quite simple: purely male trees may bloom, but never develop fruit. In addition, many bisexual trees are dependent on cross-pollination; H. they need a tree of the same species in the immediate vicinity so that their own flowers are fertilized and fruit can develop from them. This knowledge is immensely important in fruit growing, for example - without suitable pollinator varieties there are usually no apples, pears or cherries.
One-house / two-house
In botany, the different plant sexes are called "monoecious" or "dioecious". Monoecious trees bloom with both male and female flowers, dioecious trees have only male or only female flowers. So there are “male” and “female” trees that have to be planted together in order to develop fruit. If, on the other hand, there is only one male tree (or even a female tree without a male counterpart far and wide) in the garden, no fertilization takes place - and therefore there is no fruit.
Examples of dioecious trees
The following Tree species are typical representatives of dioeciousness, although there can sometimes be single examples - for example in the yew tree. Other trees, such as the ash (Fraxinus excelsior), can change sex as needed. All species listed are suitable for a culture in Central European Gardens.
- Ash maple (acer negundo)
- Tree of Gods (Ailanthus altissima)
- Andean fir / Araucaria (Araucaria araucana)
- Ginkgo (Ginkgo biloba)
- Sea buckthorn (Hippophae rhamnoides)
- Holly (Ilex aquifolium)
- Juniper (Juniperus communis)
- Yew tree (Taxus baccata)
- Cake tree (Cercidiphyllum japonicum)
Tips
In particular, many pome fruit varieties such as apples and pears are rarely self-fertile, but usually always need a pollinator variety. However, it is not enough to simply plant any apple or pear tree next to it: not all varieties harmonize with one another.
