Indoor Heating and Air Conditioning

Air supplied through air conditioning and heating ducts can be extremely dry (dryer than air outdoors).   When a plant is exposed to too much air conditioning it will suffer from cold damage,  you may see leaf spots, green leaves falling and  stunted growth.  It may not use the water in the growing media if it is placed in low light, which can lead to root rot.

When a plant is placed near heating vents and registers, the root ball may dry quickly, the leaves may dry out and drop, and infestations of scale, mites, and other pests may move in on the weakened plant.

Spring and Fall

In the spring the weather begins to warm, many offices and residences may run heat in the morning and air conditioning in the afternoon.  This can cause moisture in the soil to evaporate quickly and very dry air situations at the very time of year when the plants want to begin their initial growth spurt for the year. 
To ensure the plants at your accounts don’t experience drought related stress, watch the moisture needs of your plants and monitor the daily temperature levels both inside and outside.  Adjust your watering frequency and levels accordingly.