Stamroos

Rosa 'Leonardo da Vinci'

Engels: Standard Rose

shrubRosaceae

Stamroos (Rosa 'Leonardo da Vinci') is a shrub from the Rosaceae family that grows up to 120cm tall. This plant thrives in full sun and requires moderate maintenance. Blooms in autumn and summer with pink flowers and attracts bees.

Hoogte

80–120 cm

Breedte

40–60 cm

Zonligging

full sun

Waterbehoefte

moderate

Grondsoort

loam, clay soil

Onderhoud

moderate maintenance

Bloeitijd

autumn, summer

Bloemkleuren

pink

Ecologische waarde

Trekt bijen aan

Verzorgingskalender

Taak	Jan	Feb	Mrt	Apr	Mei	Jun	Jul	Aug	Sep	Okt	Nov	Dec
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Care tips

Planting

Standard roses are grafted plants with a clear stem topped by a rounded head of flowering growth, and they need careful planting to ensure stability and long-term health. Plant bare-root standards in October, November or March when the soil is workable and not frozen or waterlogged. Container-grown plants can go in during the same months, though autumn planting allows roots to establish before spring growth begins. Choose a position in full sun with good air circulation to reduce fungal disease. Standard roses thrive in loam or clay soil that retains moisture but drains freely. Avoid exposed, windy sites unless you can provide permanent staking. Dig a hole roughly 45 cm wide and deep enough so the graft union at the base of the stem sits just below soil level. Fork over the base of the hole and mix in a generous bucket of well-rotted manure or garden compost to improve structure and fertility. Position the rose in the centre of the hole and backfill with the excavated soil, firming gently with your heel as you go to eliminate air pockets. The standard will need a sturdy stake—drive a treated wooden or metal stake into the hole before planting to avoid damaging roots later. The stake should reach just below the graft union at the top of the stem. Secure the stem to the stake with two adjustable tree ties, one near the top and one halfway down, leaving room for the stem to thicken. Water thoroughly after planting, applying at least 10 litres to settle the soil around the roots. Spread a 5 cm layer of well-rotted compost or bark mulch around the base, keeping it clear of the stem itself to prevent rot.

Pruning

Prune your standard rose in March, just as the buds begin to swell but before leaves fully emerge. Pruning at this time encourages vigorous new growth and abundant summer flowering. You'll need sharp bypass secateurs and long-handled loppers for thicker stems; clean the blades with disinfectant between plants to avoid spreading disease. Start by removing any dead, damaged or diseased wood, cutting back to healthy white pith. Then take out any thin, weak or crossing stems that clutter the centre of the head—your aim is an open, goblet-shaped framework that allows air and light into the middle, reducing blackspot and mildew. Standard roses flower on the current season's growth, so don't be timid. Cut back the remaining healthy stems to outward-facing buds, leaving each stem about 15–20 cm long from the graft union at the top of the standard. Make each cut at a 45-degree angle, sloping away from the bud and about 5 mm above it. This encourages the new shoot to grow outwards, maintaining the rounded, balanced head. If one side of the head is weaker, prune those stems a little harder to stimulate stronger regrowth and restore symmetry. Throughout summer, deadhead spent blooms regularly by cutting back to the first strong leaf with five leaflets; this promotes repeat flowering into autumn. In late autumn, after flowering finishes, you can lightly trim back any very long shoots by about a third to reduce wind rock over winter, but save the main pruning for March. Check and adjust the tree ties annually during pruning to prevent them cutting into the thickening stem.

Maintenance

Standard roses need consistent moisture during the growing season. Water deeply once or twice a week from April through September if rainfall is scarce, applying 10–15 litres per plant so water reaches the root zone. Clay and loam soils hold moisture well, but avoid waterlogging. Reduce watering in autumn and winter when the rose is dormant, watering only during prolonged dry spells. Feed in March with a handful of general-purpose granular fertiliser such as Growmore or blood, fish and bone, scattering it around the base and lightly forking it into the topsoil. Apply a specialist rose fertiliser in April, following packet instructions, then give a second dose in June to support the summer flush of flowers. Avoid feeding after mid-July, as soft late growth is vulnerable to frost damage. Refresh the mulch layer each spring, spreading well-rotted compost or bark around the root zone to suppress weeds, conserve moisture and improve soil structure. Keep mulch a few centimetres clear of the stem. Standard roses in zone 6a–9b are generally hardy, but the graft union at the top of the stem is exposed and can suffer in severe winters. In colder areas or during hard frosts, wrap the head loosely in horticultural fleece. Check stakes and ties each autumn and spring, adjusting as needed. Rosa 'Leonardo da Vinci' is relatively disease-resistant, but watch for blackspot (purple-black leaf spots), powdery mildew (white coating on leaves) and aphids on new growth in spring. Remove and bin affected leaves promptly, and spray with a fungicide approved for roses if infection is severe. Encourage natural predators such as ladybirds to control aphids, or wash them off with a strong jet of water.