Rubus fruticosus 'Merton Thornless'
Blackberry 'Merton Thornless'
Rubus Rubus
'Merton Thornless' _ 'Merton Thornless' is a compact, deciduous shrub with long, thornless canes, white flowers in summer and medium-sized, dark blackberries in late summer and early autumn.
Rubus fruticosus 'Merton Thornless' is: Deciduous
Compact, Spreading
White in Summer
Dark-green in Spring; Dark-green in Summer; Pale-yellow, Dark-pink in Autumn
It is best to rotate crops to avoid pest and disease problems.
Aphids , Leafhoppers , Raspberry beetle , Raspberry leaf and bud mite Aphids , Leafhoppers , Raspberry beetle , Raspberry leaf and bud mite
Prune old canes to ground level in late winter and tie in new canes.
Layering
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Rubus fruticosus 'Merton Thornless' (Blackberry 'Merton Thornless') will reach a height of 2.5m and a spread of 7m after 2-5 years.
Add to salads, Banks and Slopes, Cake decoration, Containers, Cottage/Informal, Flavouring food and drinks, Hedging/Screens
Plant outdoors in summer in well-drained neutral soil against a fence or trellis. May not survive harsh, cold winters unless in a sheltered spot.
Clay, Loamy, Sandy
Moist but well-drained, Well-drained
Neutral
Full Sun
South, East, West
Sheltered
Hardy (H4)
We do not currently have companion plants added for this plant.
Rubus fruticosus 'Merton Thornless'
Blackberry 'Merton Thornless'
Rubus Rubus
'Merton Thornless' _ 'Merton Thornless' is a compact, deciduous shrub with long, thornless canes, white flowers in summer and medium-sized, dark blackberries in late summer and early autumn.
Deciduous
Compact, Spreading
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White in Summer
Dark-green in Spring; Dark-green in Summer; Pale-yellow, Dark-pink in Autumn
It is best to rotate crops to avoid pest and disease problems.
Aphids , Leafhoppers , Raspberry beetle , Raspberry leaf and bud mite
Prune old canes to ground level in late winter and tie in new canes.
Layering
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Rubus fruticosus 'Merton Thornless' (Blackberry 'Merton Thornless') will reach a height of 2.5m and a spread of 7m after 2-5 years.
Add to salads, Banks and Slopes, Cake decoration, Containers, Cottage/Informal, Flavouring food and drinks, Hedging/Screens
Plant outdoors in summer in well-drained neutral soil against a fence or trellis. May not survive harsh, cold winters unless in a sheltered spot.
Clay, Loamy, Sandy
Moist but well-drained, Well-drained
Neutral
Full Sun
South, East, West
Sheltered
Hardy (H4)
Zone 9, Zone 8, Zone 7, Zone 6, Zone 5
Rubus fruticosus 'Merton Thornless' (Blackberry 'Merton Thornless')
grape ground pearl
Margarodes vitis
Insect
Absent
2
5
Main pathway; Vitis spp. plants for planting; already prohibited. However; further consideration of other pathways is required.
Rubus fruticosus 'Merton Thornless' (Blackberry 'Merton Thornless')
Apple root knot nematode
Meloidogyne mali
Nematode
Unknown
3
4
UK (along with certain other European countries) received potentially infested trees in 1992; but these were destroyed at the end of the trial period and targeted surveillance has failed to find any trace of the nematode. Main impacts are on elm; apple and mulberry and industry should source such material carefully.
Rubus fruticosus 'Merton Thornless' (Blackberry 'Merton Thornless')
Alfalfa dwarf; Anaheim disease; California vine disease; Dwarf disease of alfalfa; Dwarf disease of lucerne; Leaf scald of oleander; Leaf scald of plum; Leaf scorch; Phony disease of peach; Pierce's disease of grapevine; Variegated chlorosis of citrus
Xylella fastidiosa subsp. multiplex
Bacterium
Absent
3
4
A bacterial disease with a wide host range detected in Corsica. Although EU regulated; there remains some concern about the risk of introduction. This subspecies is known to be able to thrive in cooler climates. Should an outbreak occur; there would be a need for eradication action which would result in environmental and social impacts.
Our plants are under greater threat than ever before. There is increasing movement of plants and other material traded from an increasing variety of sources. This increases the chances of exotic pests arriving with imported goods and travellers, as well as by natural means. Shoot is working with Defra to help members to do their part in preventing the introduction and spread of invasive risks.
Traveling or importing plants? Please read "Don't risk it" advice here
Suspected outbreak? Click here for contact details to report to the relevant authority.
Date updated: 7th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/
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This plant likes... | Garden match | |
Soil types: | Clay, Loamy, Sandy | Tell us... |
Soil drainage: | Moist but well-drained, Well-drained | Tell us... |
Soil pH: | Neutral | Tell us... |
Light: | Full Sun | Tell us... |
Aspect: | South, East, West | Tell us... |
Exposure: | Sheltered | Tell us... |
Hardiness: | Hardy (H4) | Tell us... |
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diseases on merton thornless
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