I don't think petite is a height so much as a body shape. I have seen tall women shopping in the petite section because they have a short waist or shorter arms or wanted a skirt that fits them better than the regular ones, and I have seen smaller women shopping in the junior/misses/womens section for similar reasons.
Sweet clover needs a high pH, 6.0 or higher, for proper nodulation to occur, and it has a higher calcium requirement as well. Sweet clover is able to obtain phosphorus from relatively unavailable soil phosphates and will grow on soils where alfalfa, red clover or ladino will fail.
A good pH range for Rhododendrons, Azaleas and Camellias is 6â7. Wherever the soil is too alkaline, amend the soil with Nurseryman's Acid Mix or Gold Rush to reduce the pH. For established plants in alkaline soil, treat with Iron Sulfate or Master Nursery Iron Plus.