Achillea is a great candidate for air drying. It will dry quicker if you strip any foliage (then smell your fingers -- the leaves of yellow yarrow are highly fragrant, although the smell doesn't linger).

Thanks -- just did the hanging thing, and the leaves do smell great.. They might make good pot pourri.

Love my yellow yarrow, but never tried to dry it. Do I have to hang it upside down to dry it? How should I store it? Got any suggestions for other good dried flower plants?
Happy Gardening! Karen

I've always dried yarrow by stripping the foliage and hanging it upside down in a warmish, darkish, dryish place. Since it has a fairly strong stem and doesn't change much in the drying process, it might dry well just by putting it in a vase without water -- but I haven't actually done it that way.

As for other flowers to dry, the link below gives some suggestions.

Here is a link that might be useful: What Dried Flowers Are You Growing?

I dry my yarrow the easy way...I strip off the leaves and place them in a vase without water. They dry stiff and upright just like that and look nice on an end table while your doing it.

Kay.

I'm a complete newbie to drying, but I've been a gardener for years and have dried things here & there....I know Achillea is the easiest plant ever to dry. All I do is hang them upside down on a bar (just put the heads upside down right over the bar), or wrap stems with a rubber band, twist tie, or thread and hang them up to dry. They do all the work themselves.
When they're ready they look so great arranged in a rustic pot. :o)

I bought some maroon yarrow at the market. I decided to dry it for displays. I hung it upside down in a darkish and dry environment, but although the stalks are drying, the blooms are very limp and losing their shape. It's been about a week of drying so far. Is the process going as it should?

For drying, you have to wait to pick yarrow until the flower develops pollen. Then it will hold its shape when it dries; otherwise the flowers shrink into pinpoints, rather than pinheads.

The pollen appears in a raised area in the center of each tiny flower -- an English writer about dried flowers calls it the "bobble." I suspect that your yarrow was picked before the bobble appeared, and picking before pollen appears is a fairly common practice for fresh flowers. If I'm correct, I don't think you'll have much luck with your bunch.

How long do yarrows have to dry?