![]() Late-flowering fruit varieties are more vulnerable because flowering occurs at higher temperatures. Plums and other prunus species are not affected.Ĭaption: Amelanchier is one of the plants that can be affected by fireblightĪ It generally develops at flowering time, and is encouraged by warm, wet weather. This includes amelanchier, apple, cotoneaster, flowering quince (chaenomeles), hawthorn, rowan, pear, pyracantha, quince and whitebeam. Drops of whitish or yellowish bacterial pus may seep out from dead tissues in spring and summer.Ī Fireblight only affects the sub-group of plants with apple-like fruits (maloideae) within the large rose family (rosaceae). Q What further checks can I make to confirm it's fireblight?Ī Below the damaged bark, the cambium layer, which is usually creamy white, develops reddish-brown staining. Cankers develop at the base of affected shoots. Bark in affected areas dies, and may appear dark, sunken or cracked. Twigs, large branches or whole trees may die. The dead leaves and flowers slowly disintegrate and fall over a long period. ![]() Affected shoots are usually scattered throughout the canopy and may appear next to perfectly healthy ones. The shrivelled shoots tend to have hooked tips, like a shepherd's crook. The name comes from the characteristic blackening of affected leaves and shoots.Ĭaption: Fireblight causes flowers and/or shoot tips to wilt and dieĪ Flowers and/or shoot tips wilt and turn brown or black. A A serious and potentially fatal disease of pears, apples and related plants caused by the bacterium Erwinia amylovora.
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