The epidermis of petals also form a variation of trichomes called conical cells. These cells all develop from the pavement cells, which make up the majority of the plants surface cells. In short, cellular differentiation of the epidermal cells is controlled by two major factors: genetics and environmental conditions.
Azaleas and rhododendrons thrive in acidic soil. Azaleas and rhododendrons thrive in the acidic soil that is common under pine trees. Both plants are classified under the genus Rhododendron; the main difference is the smaller, funnel-shaped flowers on the azalea.ake soil samples from the area under the trees where you want to plant the azaleas or rhododendrons. Mix the samples in a bucket and test with a soil pH test kit.
This will help the roots form. Dip the end of the cutting into root growth hormone, making sure to cover the area that you stripped away. Poke the cutting into the pot, with the cut end down, so that it stands straight up. Water the cutting thoroughly. Create a tent over the pot with either clear plastic wrap or a clear plastic bag. Secure with a rubber band so that air does not escape. How to Propagate Rhododendron Cuttings.