Posted: 02/07/2013 at 17:08
I do this mainly with veg, thoght appreciate it might not look great in an ornamental border.
I cut off the bottoms of 1 or 2 litre plastic fizzy drink bottles, take off the cap and wiggle the neck into the ground right by the plants. Then you can water directly into this makeshift funnel, ensuring the water goes straight to the roots rather than shallowly soaking the surface of the soil. I do all my watering with cans from the various butts I've got around the place, and this way, you don't need the sprinkler rose on the can.
For containers, I often full a big trug full of water (again from the butts), and add the correct amount of lquid seaweed feed or tomorite, and submerge the pots until the bubbles stop rising. I drain them in another butt, so that excess feed can be reused rather than dribbling away from the bottom of the pots.