Temperature & Plant Responses to Temperature Floral Careers Plant Propagation

Air Temperature Most buildings, offices, and homes are maintained at temperatures between degrees F. throughout the year.

Microclimates Climatic conditions will vary from location to location within a home or building. temperature humidity light

Causes of Microclimates Heating/AC vents Windows Doors Fireplaces Incandescent Lights Ventilation Fans Dieffenbachia

What Can Be Done? People can move to a more suitable location, plants can’t! Choices Move the plant, or Try to change the climate

Cold Temperatures Causes: Drafts from windows or doors Air-conditioning vents

Cold Temperature Damage Plant symptoms: Downward- curled leaf margins Water-soaked lesions Severe Cold Injury on Chinese Evergreen

Cold Temperature Damage Little to no new growth Reduced need for water Severe Cold Injury to Dieffenbachia

Warm Temperatures Causes: Exposure to direct sunlight Heating vents Fireplaces Incandescent light bulbs Ovens

Warm Temperature Damage Symptoms: Leaves turn yellow and develop brown, dry margins and/or tips. Leaves may turn all brown. High Temperature Damage to Heart-leaf Philodendron

Warm Temperature Damage Plants become “stretched” or spindly. Problems with insects, especially spider mites.

Rule of Thumb... Most interior plants are more tolerant of HIGH TEMPERATURES than of COLD TEMPERATURES. Many interior plants are damaged at temperatures of only 50 degrees F, or less!

Humidity Foliage plants like 80%. < 20% during the winter. How can we increase humidity?

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