Would clipped ivy vines still form roots easily in middle summer?
I take it that you are talking about English Ivy — they kind that covers houses, tree and you, if you stand still long enough. You say you clipped them — does that include the roots? If not, chances of them growing are slim. What you should do, if you want cuttings is this: Lay the middle of a vine flat on the ground and cover with soil and maybe a rock over it. Water as you would and wait about 6 – 8 week. After that time, gently tug on the vine to see if roots have formed. If they have, clip the vine from the mother plant (the original plant); dig up the rooted section and transplant. Another way is to take your cuttings and put them in water.