Monitor plants carefully for signs of insects or mites. Many "critters" can arrive on the wind and find ways through screens.
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Re-pot plants that have been in the same pot/soil for a few years. Examine the root mass carefully to see if there are insects or if the roots are girdling at the edges and in need of a sharp knife to rejuvenate them.
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Provide support for larger plants you have taken outdoors. Summer winds and thunderstorms can upend many taller container plants.