If you live in an extremely sunny area, full greenhouse shade may be necessary this month.
Decide now whether you will keep your plants in the greenhouse during summer months; if not, select outdoor locations now to facilitate transfer of plants next month.
If weather turns warm, it may be necessary to hose down greenhouse walks and spray-mist the foliage now.
Purchase or make your own chrysanthemum cuttings for fall blooms.
Pot bulbs of Lilium auratum, the goldband lily, for August flowering.