Moss roses are usually summer flowering, this means that the flower buds are formed on the previous season’s growth. Any pruning should be light, taking out dead diseased or crossing stems and trimming back the others by about a half to a third. It should be done after the flowers have faded at the end of the summer
Feed with blood fish and bone, twice a year, in the spring as the rose starts into growth and after summer pruning. Scrape the soil under the bush, being careful not to damage the surface roots and work in the powdered or pelleted blood fish bone.
Roses are not usually grown from seed but can be easily rooted from hardwood cuttings taken in late autumn.
Insert the cuttings, 20 to 30 cm long into a prepared trench in a shady part of the garden. These will take about a year to root when they can be potted up individually and planted out in to the garden the following season
In a commercial situation roses are grafted onto a root stock
Bare root roses are planted out in the dormant season. Dig a hole that is large enough to take the rootstock without squashing and deep enough to take the graft and be covered by about 4cm. Backfill adding blood fish and bone, water and firm in.
Container grown roses can be planted out at any time of year. Dig a large hole and untangle the pot bound roots. Back fill adding blood fish and bone covering the root stock by about 4cm. Water well and continue to attend to the watering through out the growing season as the the plant establishes new roots
Moreau-Robert 1872