Jay Angler wrote:It's good to refresh our memories about the general parts of a flower, and what they do.
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The anther is where the pollen is. Pollen can be quite obvious in a flower like a squash, but be almost microscopic on some flowers.
Many flowers want to receive pollen from a different (non-clone) plant, like a different variety of peach, but some are less fussy.
The pollen needs to land on the top of the stigma to do its job. There are thin tubes in the style that lead the pollen down to the ovule. (It's not the same in all plants - https://en.wikipedia.org/wiki/Pollination for more detail.)
So if you're trying to hand pollinate, you need to use something delicate like a soft paintbrush or cotton swab. You need to dab it first on the anthers of one blossom, and second on the stigma of a second.
I try to only pollinate a single flower in a cluster on a fruit tree, as it's better for the tree not to have too much fruit too close together.
If a tree has a lot of flowers, I'm known to cheat and pick a blossom and smoosh its anthers against another flower's stigma. I'll use a single blossom on about 5 other flowers, but by then it's pretty much disintegrating in my hand.
If the weather's being weird, I try to do a bit of this every few days for a week or so. The trouble is remembering to...
Hand pollinating in no way replaces good pollinators. However, it usually does get me some fruit when the weather's bad enough that I'm not seeing any pollinators out visiting. One good, sunny afternoon, can make the world of difference. I will admit, I make a fairly lousy bee!