Chamomile (Matricaria chamomilla) is a very hardy, low, bushy plant tends to clump and can be broken apart for replanting. Chamomile is a great companion plant for cannabis gardens that increases the turgor of neighboring plants while repelling mosquitoes and flies. Chamomile extract in the form of an organic garden spray is used to spray on seedlings to prevent damping-off, a common fungal infection that kills fragile cannabis seedlings. Its natural anti-bacterial and anti-fungal properties can help cannabis plants prone to fungus, mildew, mold, blight and other common marijuana plant ailments. Chamomile should be kept trimmed back so it stays full and healthy and does not get leggy and scraggly.