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I just started using a bagged hardwood mulch that is broken down to about 1/4 to 1/2 inch. This mulch has definately created a barrier between the mulch and the soil. It is generally 1-2 inches thick and I know water is not penetrating it. I have a small raised bed about 50-60 sq ft and yesterday I drowned the bed putting at least 50-60 gallons of water down. I let it sit for about 2 hours and went back and the water had only penetrated the mulch to the tune of about 1/2 inch. I also noticed my newly planted daylillies were looking bad and checked the soil, and it was pretty dry although I have been watering heavily every 3rd day. In my zone we are now getting daytime temps in the low 80's. I am attaching a picture of the raised bed that has Dutch Iris. Please do not be fooled by all the growth as this much was just put down 2 weeks ago.
Suggestions/advice please!
Click the image for an enlarged view.
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