Hello philandjo.baker and welcome to the forum. Is the pond a pre formed pond or is it rubber/butyl lined? How large is it? If its fairly small then the easiest control is just to hand pull the grass out.
Cacoethes: An irresistible urge to do something inadvisable
Is it 'just grass' @philandjo.baker, or could it be something else? In warmer areas, algae will be appearing which often looks grassy. If it just grass, then doing as @Ladybird4 says is the solution.
Have you got a pic? The little icon that looks like a mountain is the one to click on
It's a place where beautiful isn't enough of a word....
I think the pulling out by hand route is the way to go. Trace the roots back to their base of origin and see if you can remove the grass plants causing the problem and keep an eye on things through the season to prevent it happening again.
Cacoethes: An irresistible urge to do something inadvisable
Yes - if it's just grass, you can just pull it out. If you have grass right up to the pond edges, it's not unusual for it to spill over and get into the water, but it's not a problem unless there's been chemicals - ie weedkillers/lawn weed and feed etc - on it. It can actually be helpful for creatures needing to access the water too, and many people actively encourage it, but if it's becoming a nuisance, following @Ladybird4's method is the way to go.
It's a place where beautiful isn't enough of a word....
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In warmer areas, algae will be appearing which often looks grassy.
If it just grass, then doing as @Ladybird4 says is the solution.
Have you got a pic? The little icon that looks like a mountain is the one to click on
If you have grass right up to the pond edges, it's not unusual for it to spill over and get into the water, but it's not a problem unless there's been chemicals - ie weedkillers/lawn weed and feed etc - on it.
It can actually be helpful for creatures needing to access the water too, and many people actively encourage it, but if it's becoming a nuisance, following @Ladybird4's method is the way to go.