You sure can. Get it deeply into some potting soil right away and fertilize gently with fish/seaweed emulsion if you have any. Leave it outdoors as the sun won't hurt it. When it firms up, and it will in a few days, put it in the garden. I've got two growing nicely in the garden right now. Did the same last year and they produce well.

Peaches,

I would add one caveat to what Jbann23 said in that I would keep it in filtered sun or on the north west side of your house where it will only get a little sun until it has had a week to adjust to soil and get some roots otherwise it will wilt.

Greg

Greg, I agree with you. Mine that I just stuck into the ground did wilt and I thought they were goners. A week later they were standing proud. One I set in potting soil and kept it shaded and it didn't wilt in the least. It's in the ground now and flourishing. Got myself confused for a minute there. Thanks.

Submerge as much of the stem of the cutting as possible in water. Prune off the flowers and all the leaves except for the top 2 or 3 leaves plus the growing tip. Keep the plant in water continuously until the aventitious roots emerge at least one inch and not more than 2 long. During this time, keep the cutting in dappled sunlight.

When the roots have emerged 1 - 2 inches long, transfer the cutting directly into your growing bed IF you have built-up soil that is heavily amended with organic matter and is very mellow. When transfering it directly to its permanent location, you might want to rig up a piece of bedsheet as a temporary sunscreen for a few days.

If your bed is rough or dense native soil, transfer the cutting with newly emerged roots from water to a deep container like a 1/2 gallon milk jug or carton with the top cut off and filled with a good, mellow growing mix like you would use for any other seedling. Keep the transplanted cutting in dappled sunlight a few days and slowly move it into more and more sunlight to harden it off to its ultimate location.