Yes Tress lucerne is an excellent legume for the soil as is red clover with very little need to add nitrogen once established. I use potash to fertilise paddocks Lucerne as a living mulch is an excellent source of nitrogen vitamins and minerals As dry mulch it has nirogen fixation qualities which i didn't realise, although not sure of the amount of nitrogen it contains. Often you can purchase 3 bales of pasture hay to one lucerne price wise depends on your budget and size of garden. A neighbour up the road has 5000 lemon trees and bales his own pasture hay for mulch as lucerne is to dear. Pasture hay for sale $5 a bale ex Wauchope.... Thanks for the tip!
