Longer, skinnier paint brushes tend to work best.
The stamen is found deep within the flower. It’s a tiny, bulb-shaped piece of the plant found within the center of the flowers. The anthers are tiny buds found at the end of the thin stems sprouting from the center of the flower. The pistil is found inside the stamen. While you may not be able to see it, you can access it with your paint brush by brushing deep within the flower. When it is receptive to pollen, the top will become sticky.
Pollinate your trees as soon as they start to bloom. The precise time of year your trees will bloom depends on your region and climate.