Whether tending to a small backyard garden or managing a vast landscape, especially a diverse one. Gardeners invest time, effort, and care into creating these vibrant and flourishing outdoor spaces. However, the success of a garden can be significantly impacted by the presence of pests and diseases.
Pests, ranging from insects and mites to rodents and birds, can wreak havoc on plants by feeding on foliage, stems, roots, or fruits, causing damage, stunted growth, and even plant death. In addition to pests, diseases caused by fungi, bacteria, viruses, and other pathogens pose significant threats to plant health and vitality. These diseases manifest in various forms, including leaf spots, wilting, rot, blight, and cankers, leading to weakened plants, reduced yields, and crop failures.
However, by adopting proactive and holistic approaches to pest and disease control, gardeners can minimise risks, protect plant health, and sustainably maintain beautiful and productive gardens for years to come.
In that accord, Royal Horticulture Society(RHS) Chief Horticulturist, Guy Barter shares his expert insight into common South Asian plants found in UK gardens and the pests and diseases that affect these plants.
Favourable South Asian plants in the UK
According to Guy, the best climate for South Asian plants is in the Southeast region, especially in London. Northern regions and Scotland usually lack warmth and a greenhouse, even if only a polytunnel is very valuable. “Cauliflowers, onions, potatoes, spinach and tomatoes of course grow well in the UK and in the Subcontinent. However, ones that require more warmth and light can be challenging. By starting seeds and young plants indoors and growing in sheltered spots or greenhouses, good results can be obtained in late summer and early autumn”, he said.
Some of the summer greenhouse vegetables common in the UK include bitter gourd, brinjal, aubergines, green chillies and okra. Other summer vegetables include elephant foot yam and pointed gourd, French beans, cowpeas, cluster beans, radish and taro, growing favourably in the UK. Herbs like basil, coriander, cumin, dill, fennel, poppy and saffron are also widely sown and easily grown in the country.
“Warmth and light are crucial for fruiting crops such as bitter gourd and cowpeas, but leafy crops such as fenugreek can get by in less bright conditions”, Guy added.
Common diseases affecting these plants
In Guy’s opinion, no special pests afflict South Asian vegetables in the UK but the usual problems of greenflies and slugs must be anticipated. “Ideally, avoid growing crops from supermarket stems and leaves and aim to grow from seed as this poses less risk of introducing unwanted organisms. Above all do not bring plant material back from abroad - this is prohibited by law”, he advices.
He further adds, “Often problems resolve themselves so do not be in too much of a rushed treatment. Where problems cannot be controlled by picking off infected leaves and unwanted insects, as a last resort use an approved pesticide sold for garden use on plants that are to be eaten. These are very effective and safe if used as directed.
“Herbs are probably the easiest crops- cumin, coriander and basil for example. Radishes are reliable if sown in mid-summer and various climbing beans, including hyacinth bean and cowpeas, are interesting and straightforward and succeed outdoors in the south.”
Additionally, Guy advices, “A heated propagator is invaluable for starting the warmth-loving seeds of South Asian vegetables.”
