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Updated: May 25, 2025
On bright days their duration is confined to one evening, but during cloudy weather they may still be found open on the following morning. Contrary to their congeners they are dependent on visiting insects for pollination.
Such cases invite scrutiny, and would, no doubt, with the methods of isolation, artificial pollination, and the sowing of the seeds separately from each parent, yield results of great scientific value. Any one who has a garden, and sufficient perseverance to make pure cultures during a series of years might make important contributions to scientific knowledge in this way.
There are, of course, other soft-shelled almonds which are worth planting and are being considerably planted in localities where they do well. This you can ascertain by inquiry among local growers and nurserymen. The planting of a good proportion of active pollinizers is the most important point. Almond Pollination. My almond trees look healthy but the fruit seems to be diseased.
According to the general rule of pedigree-culture, the seeds of each individual plant are always saved and sowed separately. This is done even with such species as the clover, which are infertile when self-pollinated, and which are incapable of artificial pollination on the required scale, since each flower produces only one seed. My clover was always left free to be pollinated by insects.
In order to get the required amount of seed it is necessary in our climate to encroach as little as possible upon free pollination, aiding the self-pollination, but taking no precautions against intercrossing.
It is an especial refuge of the birds and the bees, you will find, and it invites them with its rare fragrance and deeper blush, so that they may work all the more earnestly at the pollination without which all this richness of bloom would be ineffective in nature's reproductive scheme.
Thus Goethe found himself led to ideas regarding the male and female principles in the plant, which were the exact opposite of those one obtains if, in trying to explain the process of pollination, one does not keep to the plant itself but imports an analogy from another kingdom of nature.
You can get pears on quince roots from most of our California nurseries. Pollination of Pears. Is it necessary in growing the Comice pear successfully, to put some other pear near for the purpose of pollination in order to make it successful? Will the ordinary Bartlett pear do for pollination?
The inference of these early authorities regarding this process of pollination is perfectly clear from their statements. The stamens in most flowers were seen to surround the pistil, "and of course the presumption was that they naturally shed the pollen upon the stigma," as illustrated at B in my series. The construction of most flowers certainly seemed designed to fulfil this end.
Such shedding can be partially controlled by pruning away the lateral branches as soon as formed and topping the plants after the third cluster of fruit has set, and by a reduction in the use of nitrogenous fertilizers. A failure to set fruit in the greenhouse is often due to lack of pollination, which must be remedied by hand pollination.
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