Select a site with plenty of morning and afternoon sun. Don’t expect to grow roses on the south side of an avenue of trees or wall. It is too shady.

Plant Holes

Roses like a good, well drained loam soil. The poorer your soil the bigger the planting hole should be. The general recommendation is to dig square planting holes half a metre wide and 15cm deep (NOT round). If one is going to water and fertilize regularly, holes half this size will suffice. For bigger plantings, dig a trench with similar dimensions. Mix a bag of GROMOR Rose Starter with the topsoil for each rose planted.

Roses

Watering

Roses thrive on heavy watering and feeding, provided drainage is good. Water up to 4 times per week during hot summer months and at least once a week for the rest of the year.

Feeding

Fertilize monthly, alternating with GROMOR 5.1.5(28) at 50g/m2 and GROMOR Accelerator organic fertilizer pellets, at 150g/m2.

For BIGGER BLOOMS, apply a tablespoon of Potassium Sulphate (Potash) and Magnesium Sulphate (Epsom Salts) per rose bush, every 6 weeks during flowering.

Mulching

Rose roots thrive under a layer of mulch, which keeps the soil moist and cool. Apply GROMOR Pinebark Mulch to cover the bare soil between the rose bushes. Mulch slowly decomposes and will require topping up from time to time.

Pests and Diseases

Spray Lyn’s Rose Cocktail every 10 days. More often in damp periods. Watch out for pests and diseases such as red spider, aphids, powdery mildew, downy mildew, black spot, rust and termites.

Pruning

In frost free areas, try “green pruning”. In frosty areas, prune in August. With early pruning one runs the risk of new growth being “burnt” by late frosts. Excessive cold also encourages “blind shoots”.

“Sick, defoliated roses”

  • Spray with Lyn’s Rose Cocktail every 4 days for 2 weeks (4 applications).
  • Keep the soil moist but NOT waterlogged.
  • Apply GROMOR Accelerator organic fertilizer pellets at 150g/m2 of rose bed.

These recommendations were written with input from the Late Lyn Keppler of Star Rose Nursery

Symbol of Growth