How to Take Care of Plants When You are Away
When using a potting mix, find one with moisture-retaining polymers. You can also get regular potting mix and add polymers to it. The compounds in the polymers retain the water for use by the plant later on when it needs it.
No Direct Sunlight
If you are going away for an extended period of time, move your plants out of the direct sunlight. To do this you could simply add some sheer curtains to the window. This is a great plan because your plant still gets a small amount of light to help it grow but does not steal the moisture as quickly.
If you are leaving in the summer, turn the thermostat down. This will help keep the house cool and help the plants maintain moisture.
Move the Pots/Containers
When you are about to leave for an extended period of time, move your plants close together. This will make the plants happier. The plants will provide each other with shade and humidity.
If you have sensitive plants in your home simply make a tent for them. To do this simply grab some non-scented white trash bags and place a bag upside down on each sensitive plant. You can use stakes as the support to keep the plastic directly off the plant. Then, simply cut a few small holes in the plastic that will allow oxygen to get to the plant.
If you have outdoor plants that you are wanting to make sure make it while you are on vacation simply move them to a sheltered location. This will help them stay away from the wind and when you move them cluster all the outdoor plants together.
Bury Them to the Rims
If you have outdoor plants that are potted you can temporarily bury the potted plants to the rim of the pot. Then, you can add mulch. This will help keep the moisture and keep your plant alive longer.