Plant mulberries in spring as the soil warm up. Tolerant of a range of soils, mulberries can be grown against walls if space is limited. You can also propagate mulberry trees from cuttings. Mulching also resists heat in summer, so a top layer of mulch is a good idea for a mulberry tree growing in a warm climate. Plant the cuttings/saplings at a spacing of 75 / 105 cm x 90 cm.