Rhamnus; Rhododendron; Rhus; Ribes; Rosa; Rosemarinus; Rubus; Ruta:
As Roses are dealt with elsewhere on the website, the
Rhododendrons must rank as one of the most popular groups of
shrubs starting with letter R.
Wide range of flowers and sizes, make these evergreen shrubs deservedly popular - if you have acid soil!
Redbud Tree - Cercis: - See Cercis
Red Robin – Photinia - Stranvaesia: - See Photinia
Reinwardtia: - Evergreen shrub for the tropical countries. Rich golden yellow flowers over grey green leaves. Colder couintries can grow this shrub under glass.
Rhamnus: - Flower arrangers delight. Evergreen foliage - sometimes variegated - Insignificant flowers, though scented. Hardy in most areas.
Rhaphiolepsis: - Evergreen with white apple-blossom flowers. Very fragrant. Only for tropical countries as they are not hardy. Can be grown under glass.
Rhododendron – Azalea: - Wide range of evergreen shrubs - often grown as collections to the exclusion of other shrubs. Stunning flowers for short period of time and mainly laurel-like foliage. However, there are several that are worth growing just for their foliage. Colours of flowers are mainly pinks, reds, violets and blues. However, there are orange and yellow types. All need an acid soil except for a new range - grafted on a specific rootstock - that are happy in lime.
Rhus – Sumach: - Loved or hated, it cannot be ignored for the spectacular autumn colours. Unusual cone-like flowers on some. Deciduous and generally hardy.
Robinia – False Acacia: - 'Frisia' - Mistakenly grown - and often sold - as a shrub. Not so. It will eventually be a tree of 10 metres or so. Suckering is also a problem. However if you have room, then it is good for shelter in a large shrub border. Frisia is the type normally grown for the golden foliage. There are other Robinias - not so well known - that will suit shrub border better.
Ruscus: - Evergreen shrubs with unusual foliage! Flowers insignificant, but sometimes followed by bright red fruits.
Russian Sage - Perovskia: - See Perovskia
Ruta – Rue: - Ruta graveolens is the only one that can really claim to be a shrub - and then with difficulty! However, silvery foliage is attractive, and helps the lime green/yellow flowers to stand out a little. Pungent - rather than aromatic - foliage.
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