Thompson & Morgan has this info for Lantana:

Sowing Instructions:
Sow February to July in trays, pots, etc of good seed compost, 1/8 Inch (3 mm) deep in a propagator or warm place to maintain an optimum temperature of 70-75F (20-25C).
Slow to germinate, soak the seed for 24 hours in a flask of luke warm water before sowing.

Good luck, I plan on trying this method too.

For lantana in Z5 unless you have room for extended care under lights, you might consider 8 weeks before last frost date, germination approx 45 - 65 days.

Hydrangea quercifolia, best germination from fresh seed. 65F, high humidity, germination in 'few weeks' with fresh seed.

Morz - wow, thanks for the info. I did not know you could get H. quercifolia to grow from seed. I have a huge one in my backyard. I'm going to try to collect seed this year. I made a mistake last year and cut it way back in early spring. Didn't know this would affect bloom, but it did. Hydrangeas are so finicky about when you cut them back, darn it

I have done a cutting, where you pin the branch to the ground and root it, but never from seed - great idea. Gotta try it.

Thanks again,

Susan