The Growing SetThe Haws Brass Growing Set contains four rose heads selected to cover the key stages of plant development. The 320 1 Extra Fine Oval produces a wide, gentle mist for seeds, seedlings, and any plant where minimal surface disturbance matters. The 325 1 Extra Fine Round produces the same fine mist in a circular pattern, suited to pots and seed cells at the earliest stages. The 325 2 Fine Round steps up the flow for plants past the seedling stage suited