Hi. I live in Thailand in a condo where i have a number of plants out on the balcony,i will be going on vacation soon for 6 weeks,i have no one to water them for me, is there a way in which they can survive my absence as i do not want to return to find them all dead and whittled away.

Wow! Six weeks! That's going to be hard. What kind of plants? How often do they need water? How big are the pots? If you have a faucet on your balcony, problem solved. Set up a drip system and use an irrigation timer to turn the water on and off.

If no faucet, there are drip systems you can set up using either a reservoir and a lot of irrigation tubing or a wicking system. I've done both and they work well but you might need a really big reservoir.

Nice fish. Was that supposed to be a photo of your balcony?

Daisy

I have to leave my plants frequently for up to a month. I'm having good luck with these watering globes. I put 2 of them in each pot.
http://www.yourstoreonline.net...
Here is some information that may be useful.
http://www.gardeners.com/how-t...
If it's affordable there are usually housesitters who will tend to plants or animals while you're away. Maybe you could have them come a few times.

I used to put all my houseplants in the bathtub with a bit of water at the bottom to wick up into the pots but that was only for 2-3 weeks.

I've done that too. I put a towel under them to hold more moisture. I had a closed clear plastic shower curtain so they could still have light. Later on my husband rigged up a small watering system that hooked to the faucet and had a timer on it.

I've laid a tarp or heavy plastic down over a border of wood. Placed the pots on the tarp, then fill it up with water. Mosquitoes can be a problem though. But you're away. They will need a goid drink from the top when you get home.