Answer: Sometimes a picture is worth a thousand words. Here are internet sites with pictures and complete cultural information for both your plants: http://www.wholeherb.com/ID/HG196A.HTM
The best time to harvest seeds is late in the summer. Until then, keep the spent flowers cut so the plant will put out additional blooms. Then, in late summer, let the flowers stay on the plant until the petals fall. By then you'll see seedheads. When they've dried completely, cut the flower heads and shake the seeds into a paper envelope. Write the name of the flower on the envelope and seal it inside an air tight container. Store in a cool, dark place until next spring, and then plant your seeds.
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