November ends the autumn growing season. For most hobbyists who keep a cool or cold greenhouse, this is a less busy time.

Greenhouse Environment

• • • • • • • If you have tender, frost-sensitive plants keep a minimum night temperature of 42°-45° F.
            • Keep vent openings closed when wet and foggy. When sunny and dry, open vents, but close mid afternoon to conserve the sun’s heat.
            • Alternately, for worry-free operation install automatic solar vent openers.
            • Run an air circulation fan 24 hours a day. Your goal is to provide enough air movement to reduce the risk of disease, but not so much your plants get chilled.
            • Water plants sparingly now (except if in flower) and use care not to splash water on benches, the floor, and leaves.
            • Space your plants out to give them the best light possible.
            • Remove dead flowers, decayed fruits, and yellow or diseased leaves.
            • Treat for disease as soon as possible. See pest control.

Keep on Growing!

• 

  Finish potting up spring bulbs and protect outside in a cool, dark area.
  

• Pot up any cuttings that were started earlier, e.g. fuchsia, heliotrope, pelargonium.
• Carefully cut back and dig out plants from your summer hanging baskets. Pack them in flats with slightly damp peat and hold under benches for next spring.
• Pot up any hardy annuals that were sown earlier for spring/summer gardens outdoors. Use small (3″ pots or so) to avoid root rot.
• Continue to harvest salad greens and cool root crops.