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Lawn Fertilization & Overseeding #927723

Asked April 07, 2026, 12:34 PM EDT

is springtime lawn fertilization & overseeding recommended in castle rock co?

Douglas County Colorado

Expert Response

Hi Bob,

Yes, spring is a great time to get started with annual lawn maintenance like aeration, fertilizing, and overseeding (if needed).  We typically recommend the first fertilization occur in April, so you're right on schedule.  For more information (like rates and further fertilizer applications), please see this CSU Extension resource: https://extension.colostate.edu/resource/lawn-care-basics/

I hope this is helpful!

Cordially,

John

An Ask Extension Expert Replied April 07, 2026, 2:54 PM EDT

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