‘Autumn is an ideal time to plant your bare root roses because while the soil is still workable and there is plenty of moisture in the ground to ensure the roots do not dry out,’ explains Liam from David Austin. Use mycorrhizal fungi: hold the plant roots horizontally over the whole and sprinkle the mycorrhizal fungi onto the wet roots. Re-position and plant: re-position the plant with the bud union 5cm below the soil level, centre the plant and backfill with your improved soil.