Masako, who has Alzheimer's disease, is in good condition because of new drugs for the ailment. She walks to a flower arrangement class.

患有阿尔茨海默病的奶奶身体状况也不错，因为那时已经出现了医治这种疾病的良药，她每天可以步行去上插花课。

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North London-based Urban Harvest also organises events, including edible flower walks and the urban harvesting of plums, apples and chestnuts.

BBC: The art of urban foraging