Re: The Friends of the Urban Forest’s idea to water the street trees using a plastic bag inside the tree container, with holds to drip water.
Ok, so we scraped this idea after the first watering. Second time, the holes for water got stuck under folds of plastic and no water came out. Then, when tugging on the bag, it tore open the hole and water poured out.
So these 20 gallon plastic trash cans from the local hardware store work great. Two nail holes — and the cans hold the same amount of water as the two fillings from the tree containers.