"Angela Marsh" wrote in message
. 97.142...
Does anyone sell an inexpensive fertilizer injector for in the line of a
sprinkler system? Something that can be soldered into the copper pipe
coming out of the wall, won't leak, and will siphon up fertilizer-water
mixture from a closed bucket?

When I put in my underground system, I looked into doing just that.

While there are easy ways, there are some limitations of which you should be
aware -

1) The fertilizer will be placed in the pattern of the sprinkler -, e.g.,
circles with the edges a lot more fertilized than close to the head. In
other words - it is not evenly placed.

2) Fertilizer is active salt - it corrodes almost everything, so keep it
away from metal - especially copper and galvanized pipes. So you need to
flush the system by keeping the watering going after feeding

3) most fertilizers used in water are foilar - that is, they feed the
leaves -leaving the roots small. So you don't get the timed release of a
dry mix.

I fed my two eight-station manifolds with a pair of short pieces of 3/4"
hose, put between the the vacuum-breaker-equipped spigot which is fed near
the main, and the manifold. .

When I wanted to feed or treat the grass or flowers in the system, I put
a Miracle-Gro hose-end sprinker in the hose junction (the flared end of the
hose-end feeder screws off and you get a second hose thread). You just
empty the packet into the Miracle-Gro bottle, screw it on, and turn on the
water and the manifold staion to be watered.

(I rarely use it, however.)