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The sweet pea plant suffers from some pests, the most common being aphids. These insects suck the sap out of the plants, reducing growth. Mosaic virus is spread by greenfly, causing yellowing of leaves, distortion of new shoots, and inhibited flowering. [6]
The sweet pea (Lathyrus odoratus) was introduced into cultivation during the 17th century. [12] Many different coloured cultivars were selectively bred by gardeners with many flower colours ranging from: pink, red, purple, white, orange and blue. [13] One colour which was always desired yet could not be obtained was a solid yellow sweet pea. [14]
Affected plants include onion, apple, peas, French beans, cherry and raspberry, and symptoms include yellowing of leaves with smallest leaf veins remaining green to produce a ‘chequered’ effect. The plant may seem to grow away from the problem so that younger leaves may appear to be unaffected.
Lathyrus / ˈ l æ θ ɪ r ə s / [3] is a genus of flowering plants in the legume family Fabaceae, and contains approximately 160 species.Commonly known as peavines or vetchlings, [1] they are native to temperate areas, with a breakdown of 52 species in Europe, 30 species in North America, 78 in Asia, 24 in tropical East Africa, and 24 in temperate South America. [4]
These leaves resemble the leaves of sweet peas. The stipules may be free or connate, and stipels (secondary stipules) are absent. The inflorescences are peduncled racemes or heads. Bracts are small, with bracteoles below the calyx, and calyx teeth subequal. The petals may be pink, purplish, yellow, or whitish.
This guide explains the most common reasons for peace lily leaves turning yellow and provides simple tips to help your plant recover. 1. Watering Stress. Overwatering and underwatering are, hands ...
Lower leaves (older leaves) show symptoms first, since the plant will move nitrogen from older tissues to more important younger ones. [7] Nevertheless, plants are reported to show nitrogen deficiency symptoms at different parts. For example, Nitrogen deficiency of tea is identified by retarded shoot growth and yellowing of younger leaves. [8]
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