The name Hydrangea comes from words meaning "water vessel" because the seed pod looks like a greek urn in its shape. The pods that I've seen are about the size of a pencil point (the lead part). Inside this pod you'll find seeds. The seeds that I've seen are about the size of a grain of salt. They're sorta brown. If you look very closely at a mophead flowerhead type, you'll find these little pods hidden inside the branching.

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I haven't really tried to grow them from seed, so I don't know much more. I think the seeds persist for a while into the fall, but I'm not really sure of that. I've gathered them myself once just to see what they looked like and to see if I could gather them, and, basically, I just shook a bunch of dryed flowers over a newspaper and then "winnowed" out the seeds.

Hay.

thank you so much!!
Ranjana

best way to collect hydrangea seeds for me is to snip off a dried flower, put it in a large zip-lok bag, and shake it for a while. Then hold the bag so one corner is pointed downward and the brown dust like particles you see in the bottom of the bag is the seed. Quercifolia is the smallest I've collected. Paniculatas are a bit elongated, but still small.