I started carefully collecting pollen from the one pawpaw flower at the pollen shedding stage, and transferring pollen to flowers that appear to be at a receptive stage. The stigmas are receptive before pollen is shed, and when pollen is shed the stigmas are no longer receptive. With down-facing flowers on small trees, it's tricky. The variety "Sunflower" is clearly first, but has flowers at many stages. I transferred pollen both to earlier stage "Sunflower" flowers, and to earlier stage "NC-1" flowers.
|Flowers of "Prairie Fire" Crabapple. 4.11.16|
|Crabapple "Prairie Fire". 4.11.16|
|Giant old lilac bush. 4.11.16|
|Lilac Flowers. 4.11.16|
|Iris "Eleanor Rooseveldt". 4.11.16|
|Iris germanica 4.11.16|
|Pawpaw flower with pollen. 4.11.16|