A watering lance that dribbles is usually the rose
I went out on a July evening to water the pots at the back of the bed. The lance dribbled, then threw a jet that punched a hole in the compost. I thought the trigger had stuck. I pulled it again. Same dribble, same blast. I unscrewed the rose. Half the holes were packed with grit from the hose. One hole was clear. That was the jet. The washer behind the rose was also nicked, so even with the trigger off I had a weep down my wrist.
A watering lance is a long tube with a trigger and a rose on the end. The trigger opens the water. The rose breaks it into a spray you can put on a pot without stripping the soil. If the rose is blocked, you get a dribble until one hole wins, and then you get a blast. People blame the hose. The hose was fine. The head was a grit trap.
A watering can still earns its hook next to a hose. The lance is for pots you cannot reach with a can, or a tray at the back of a bench. It is not a replacement for the can, and it is not a jet washer. If I only have a few pots, I leave the lance on the hook.
When I check a dribble I unscrew the rose first. I look through the holes at the sky. If I cannot see light, I pick the grit out, or I soak the head and flush it backwards. Butt water and a hose that has sat in the sun both drop muck in those holes. Then I look at the washer between the rose and the lance. A flat or nicked ring lets water escape around the head, so you get a spray you did not ask for and a wet sleeve. Hose fittings leak at the washer, not the hose is that ring at the tap and the click. This one lives at the rose. Same cheap failure, different end of the hose.
The trigger still matters. If it will not shut, I am not watering. I am leaking. Grit in the valve does that. I flush it with the rose off, then I shut the tap and see if the lance still drips. A drip with the tap off is the connector. A drip with the tap on and the trigger off is the rose washer or the trigger seat. I would not take the trigger apart on a plastic lance I cannot get parts for. I would clean the rose and change the ring.
A watering timer that floods is usually the washer is the clock on the tap. If the path is a lake at eight in the morning, stay with the timer. If the pot is a crater at seven in the evening, stay with the rose. A tap adapter that does not match the thread is why the whole lance sits crooked and weeps at the tap. I match the adapter first. A lance will not save a wrong thread.
Skip a rose you cannot unscrew. When it blocks you have a stick. Skip the seven-pattern head that only ever sits on jet. I want a rose that is a rose, or a simple spray I can clean. Skip using the lance as a blast to wash the path. You will pack grit back into the holes and then take that grit to the pots. Skip leaving it screwed on the hose in a frost. Ice in the rose splits the head, and then every watering is a dribble. Take it off with the timer.
This shows in summer, when you use the lance every dry evening, and after any week you have run the hose from a butt. Autumn is when I take it off, flush the rose, and hang it. I now unscrew the head the first time the spray goes uneven, not after I have excavated a pot.
I do not need a new lance because this one dribbled. I need a clean rose, a washer that seats, and a trigger that actually shuts.
If I later add a buy link here, it will be a paid promo.