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The Grootendorst roses are Rugosa roses with rather untypical flowers. They show clusters of small, double flowers with frilly petals and flower continuously throughout the summer.
There are four Grootendorst rugosa roses:
'F.J. Grootendorst', the parent plant with crimson-colored flowers;
'Grootendorst Supreme' (see photo left), which has deeper-red flowers;
'Pink Grootendorst' with soft pink flowers and
'White Grootendorst' (1962), which is scented, unlike the other Grootendorst roses.