Problem: Frost Injury Affected Area: Weather injury that affects the flowers, pistils, Description: Frost injury kills the pistils causing the flowers to turn black. The key problems appear to be moulds such as botrytis and powdery mildew closely followed by bird damage. In the U.K. blueberry plants are largely trouble free and can be grown organically very successfully. They usually wait until the fruits start to change colour and then remove the fruits before they have had a â¦ There are multiple reasons why your strawberry leaves are turning brown or going yellow, including: 1. What is more important than this direct damage, is the carrying on of viruses. Most problems with strawberry leaves are caused by fungal infections. Squirrels and mice can also be a problem in some areas. For example, if your strawberry plant's leaves are stunted, wilted, or dull in color, you may be dealing with root rot. Plants which have been attacked by root nematodes, lag behind in growth. By David Marks Under normal circumstances strawberry plants are relatively free from pests and diseases. Strawberry Plants: Leaf Symptoms. Fungal diseases of the leaf may occur as soon as the first leaves unfold in early spring and continue until dormancy in the late fall. If so, the animal is probably a squirrel or a rabbit. As with all other plants, strawberry plants need the right conditions to thrive in. Strawberry diseases can affect fruit, flowers, leaves, roots, and crowns of strawberry plants, and sometimes cause the collapse of the whole plant. This will only affect Viburnums - it's the beetle on your hand in the photo. Rabbits usually work at night, while squirrels are active during the day. Field mice sometimes bite off strawberry and other fruits before they are ripe and leave the berries in small heaps among the plants. In late summer, you may see white powdery spots on strawberry leaves and fruit, which indicate a fungal mildew issue. Strawberry is the name given to several plant species in the genus Fragaria, including Fragaria vesca (wild strawberry), Fragaria grandiflora, Fragaria magna, Fragaria chiloensis and Fragaria ananassa (or Fragaria x ananassa) which are grown for their edible fruit.Strawberry is an herbaceous perennial in the family Rosaceae. Identifying why your leaves are yellowing or browning will also provide you with the best way to treat the root cause of the problem. In this way strawberry plants can be infected with viruses. Peer into the hole. The primary damage from leaf diseases is a loss of vigor through reduced leaf area. In the USA various grubs attack the fruits but in the U.K. the most troublesome pests are birds. Flea beetles feeding will leave small holes in the leaves of the plant, almost as if the plant was hit by buckshot. Flea beetles larva will also attack the root system of a plant, which may make the plant more susceptible to other pests and diseases that will kill it. Personally I wouldn't worry too much about it - it's normal for insects to eat leaves and the plants can usually tolerate quite a lot of damage without too much harm. Strawberries - Diseases, Pests and Problems Basic Information. If the hole is shallow, as if the animal was searching for insects to eat, it is likely made by a squirrel. Remnants of seedlings may be scattered on the soil surface. Watering Issues The root system has badly developed, the roots are stunted and have swollen root tips. STRAWBERRY PESTS & DISEASES IN THE UK. If the berries and blossoms have black or gray moldy areas, fruit rot or blossom blight may be to blame. Holes may be seen in the soil where mice or voles have dug down to feed on bulbs, corms or germinating seeds. Search around your lawn and garden to determine if the animal has dug up plants. The damage to the leaves of the first shrub looks like Viburnum Beetle on Viburnum tinus (not laurel). In severe conditions, the flower may die or a few pistils may survive and the flower may produce deformed fruit. On highly susceptible varieties, these diseases can cause significant economic damage.