This is a time of the year when many plants are in full growth and flower. To maintain this keep plants regularly watered and feed them every 2 weeks, always according to the directions on the packet.
Being in a lush state of growth most plants are also more susceptible to pests and diseases. Keep a regular spraying program going with any proprietary spray like Pravado. Plants in a dry atmosphere or those that are often dry at the root always seem more prone to attacks of white fly and red spider mite.
Bulbous plants like Clivia and Hippeastrums should be fed every 2 weeks until the end of August.
Generally keep all plants deadheaded and leaves picked over, and aerate the greenhouse or conservatory as much as possible.