Sunflowers Cross-Pollinated by Insects

HELIANTHUS: Sunflower

HELIANTHUS: Sunflower

HELIANTHUS: Sunflower

HELIANTHUS: Sunflower
Flowering: The plants are cross-pollinated by insects.

Early this morning I saw insects pollinating this sunflower.  

I did not have my camera and missed a good opportunity taking a picture of 

a bee...looked like lifting or being covered in the 

yellow powder substance (such a pollen?).  

When I got my camera I took these pictures. 

 Comparing the pictured above sunflower to the one below,

The picture above shows the middle area filled out whereas

the sunflower picture below is not filled out in the middle.

HELIANTHUS: Sunflower
The disk flowers are perfect and the ray flowers pistillate.

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Source for some information about Helianthus: Sunflower 

from the book "The Complete Guide to Saving Seeds 

By Robert Gough and Cheryl Moore-Gough

Post and pictures by

Nell Sapp