A popular gardening trend promises a garden overflowing with fruits and vegetables, if you just focus on the layers. Horticulturist Sheridan Hansen teaches about lasagna gardening, which is adding layers of organic material as mulch to the top of the soil. The layers eventually break down like compost and supply plants with essential nutrients. Utah has a very arid climate that can hinder the success of lasagna gardening – without moisture, the mulch layers break down slower and may not supply the nutrients to plants fast enough.