Home Gardening TIP: Want to surround your door or window in roses without a trellis? Easy, put globs of clear bathroom silicone caulk just where you want the stem. While wet, insert a garden twisty tie encasing it entirely in the caulk, allow to dry, repeat every 12. When thoroughly dry add your stalk, twist and go to the next one. Can remove caulk later by slipping a screwdriver under it to pop it off.