The researchers found that rose diversity has two hotspots in China, and that the plants probably evolved to adapt to distinct climates — yellow flowers with small leaves in the arid northwest, and ...

making them ‘specialists’” and illustrates with a photograph of an Eastern Tent Caterpillar on a ragged multiflora rose leaf. Multiflora rose evolved in East Asia but was introduced in the U.S. long ...

Black spot is a severe fungal disease characterised by large, dark blotches on the leaves of infected rose plants. It thrives in warm, moist conditions, making it a common issue during the spring ...