I remember using my twin tub rinse water for our garden/s. In that hot summer of 1976. Again in 198? and the 1990s. Then I had to buy an automatic, I grudge all that water going down the drain
. I bought lots of watering cans to decant the rinse water into, occasionally it missed the buckets but that meant that the floor got washed
. The trick is to pour the water onto the root system - lots of. I go round with the house every 3/4 days here, or if something begins to wilt. Rain is forecast!
Otherwise