It's tempting to finish off your annual plantings and perennial beds, but remember that the last average frost date along the Front Range ranges between May 10 and May 15. Warm soil with black plastic before planting warm-season Crops, such as tomatoes, peppers, squash and cucumbers. Plant when daytime temperatures consistently stay above 60 degrees.
Diseases can enter wounds caused by lawn mowers whacking the tree trunks.
Sharpen lawn mower blades. A dull mower shreds rather than cuts, causing grass tips to brown and inviting the development of diseases. Don't mow when the lawn is damp. This is the optimum height to reduce water needs and to promote a healthy lawn. Clean up the dead flowers from spring flowering bulbs, but leave the foliage until it yellows and comes out easily with a tug.