Can heavy rains damage my newly hydroseeded lawn? Yes 100% Get Free Quotes Today! Question: Can heavy rains damage my newly hydroseeded lawn? Top Answer (100% of 1 votes): Yes. Get Free Quotes Today! Find Local Pros Free Hydroseeding Cost Estimates Related Questions How Much Does It Cost to Hydroseed a 1/4 Acre Yard? How Much Does Hydroseeding Cost? Is hydroseeding more expensive than sod installation?Top answer: Not sure Is it possible to hydroseed during the winter?Top answer: In some cases What is the best time of year to hydroseed?Top answer: Late spring or early summer