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Knowledgebase : Pests and Diseases
Sometimes tomato plants produce good trusses of flowers but these wither and drop off without setting. This can be due to high or low temper...
This fungal disease is rust and it is becoming more frequent in Britain, attacking both Runner and French Beans especially in warm, damp sum...
Honey Fungus usually develops in the first instance on old dead stumps, roots or decaying posts, and can live saprophytically in the soil. I...
Apple and Pear Canker is a common and widespread disease that can also affect Ash, Beech, Hawthorn, Sorbus and Willow trees. The wind born...
Apple Powdery Mildew is a common disease of APPLE TREES although the fungus will also attack Quince and less frequently Pears and Medlar. A...
Blackfly and greenfly on runner beans are easily controlled by spraying with a suitable insecticide such as Bayer's Ultimate Fruit and Veget...
Plum moth caterpillars attack plums, damsons and gages. Plum moths can emerge from late May but it is usually from mid-June to mid-July. The...
Peach leaf curl is a common disease attacking peach trees, nectarines, flowering almonds and rarely apricots.Trees are often attacked when t...
Powdery Mildew is more likely to occur in dry spells, especially if soil conditions are dry and there is poor air movement around the plants...
The RED SPIDER MITE is a tiny sap-feeding mite and is usually only a problem where hot dry conditions exist. To reduce the risk of attack...
The fungal spores over winter on fallen leaves or in severe infestations in twig lesions. Wet or dull weather around blossom time will en...
There are a number of organic insecticides available to CONTROL WHITEFLY ON PLANTS growing in the garden. White fly breed very quickly and r...
A white fungal growth on the base of onion bulbs is a sign of the disease white rot. This fungus affects onions, and leeks, but is less comm...
Lettuce root aphid attack the plants roots during mid to late summer. The creamy-yellow aphids feed on the roots. The plants grow slowly and...
Once the first beans start to develop pinching off the top 7.5cm (3") of stem will help to deter blackfly. Should the plants be attacked spr...
Rose black spot is a common fungal disease of cultivated and wild roses. It thrives under warm, moist conditions and is more of a problem in...
Canker is a widespread and common disease of PARSNIPS [http://seeds.suttons.co.uk/search#w=parsnip%20seeds] especially in wet seasons. The s...
A carrot fly is a small black fly that is reputed to be attracted to carrots by their smell. The fly lays its eggs in the soil and the subse...
Tortrix moth caterpillars attack mainly Apples, but can also be found on Pears, Plums, and Cherries. The night flying moths are active durin...
The leek moth is usually found on leeks but may also attack onions with attacks being most severe in warm dry summers. There are two generat...
The Codling Moth is a common pest of Apples. The adults are active on warm nights in June and July. Eggs are laid singly on the leaves and d...
Common Scab is a very common disease of potatoes and is widespread throughout the country and is naturally present in most soils. It can als...
The raspberry beetle is a common pest of RASPBERRY PLANTS but can also attack loganberries and other hybrid berries. In June and July the f...
American Gooseberry Mildew is a very common disease that can attack gooseberries and blackcurrants. This fungal disease produces a whitish -...
In a dry summer potato blight causes little or no damage but during warm, moist, humid spells it spreads rapidly from plant to plant. Blight...
In recent years the lily beetle has spread throughout the country. The bright red beetles overwinter in the soil, emerging from late March t...
ANTI-MOLE BULBS need to be planted in a specific pattern to ensure that the moles are not trapped within the area you wish to protect. A few...
Lettuce downy mildew is a common disease which attacks seedlings in spring and late in the season on mature plants. Attacks can occur on gre...
The plum sawfly attacks plums and damsons. The intensity of attack can vary from year to year and a severe infestation can be followed by ye...
The adults of the three species known as winter moths attack Apples, Pears, Plums and Cherries. The adult moths emerge from pupae in the soi...
The onion fly is a common pest of onion but may also attack garlic, leeks and shallots. Young plants wilt and die and on older plants the...
Distorted bean plants usually indicate they have been attacked by the bean seed fly. This pest will occasionally attack onions but it is a m...
Club root produces distorted, swollen roots on plants in the brassica family including broccoli, cabbages, cauliflowers and also related pla...
Onions rotting from the neck down is sign of a fungal disease known as "neck rot". Scales of infected onions become soft, pale brown and sem...
Holes in potatoes have most likely been caused by wireworm. Occurring in all kinds of soil wireworm will attack nearly every kind of crop. T...
The Pea Moth lays its eggs in the open flowers during June and July and these produce the young caterpillars which will eventually bore into...
Blackcurrant Gall Mites can be a serious pest. The buds become abnormally large and rounded in shape, failing to develop further into leaves...
Impatiens leaves curling and turning yellow or white are typical symptoms of cold damage. This is more likely to be seen early in the year w...
White Blister is a widespread fungal disease that attacks plants in the brassica family including broccoli, brussels sprouts, cabbage, cauli...
Brassica Downy Mildew is a common fungal disease and can be found on Alyssum, Cabbage, Cauliflowers, Brussels Sprouts, Horseradish, Radish, ...
Cabbage root fly is a common pest of cabbages and other brassicas such as cauliflower, broccoli and brussels sprouts. Established plants ...
Notches appearing on the leaf edges and the roots being eaten can be caused by the very common pest Vine Weevil. Many types of plants ...
Onion thrips is a common pest of onions, leeks, brassicas and tomatoes. This pest is more of a problem in hot, dry summers when heavy infest...
A common pest of peas and broad beans is the pea and been weevil. The greyish-brown adult weevils are about 3-5mm in length and often fal...
The leaves are being eaten by the larvae of the gooseberry sawfly. This is a very common pest on GOOSEBERRY BUSHES [http://www.suttons.co.uk...
Dark brown spotting on broad beans is the very common disease known as chocolate spot. This disease can occur at any time from mid winter on...
There are a number of reasons why brussels sprout produce open, blown sprouts. This can occur if there is insufficient organic mater in the ...
Forked or misshapen roots can occur if the soil is stoney or has not been dug deep enough or regularly rotavated to the same depth. Manure o...
MARROWS and courgettes are male dominant especially when the first flowers are produced. As the season progresses the female flowers are pro...
Pocket plum is a fungal disease that occurs infrequently and is more likely to be found in the north and west of the country. The infected...
Raspberry cane blight is a common disease causing shoots or the whole cane to die back during the summer. The leaves start to shrivel and di...
RUNNER BEANS producing very few or no flowers may be due to the plants being grown in a shady place instead of an open, sunny position. Alth...
Seedlings can be attacked by a number of fungi that are known as damping off disease.The disease penetrates the neck of the plant just above...
A tomato fruit not fully ripening is due to disorders known as Blotchy Ripening and Green Back. Blotchy Ripening is the development of unev...
Plants sometimes produce plenty of flower buds which then fail to develop and drop off the plants. Other than an unsuitable position, this m...
Thrips is a serious pest of GLADIOLI [http://seeds.suttons.co.uk/search?w=gladioli&asug=] and is more of a problem in hot, dry summers. Seve...
Sweet Corn Smut is a fungal disease that is more likely to occur in very warm summers. This disease is not transmitted within the plant and ...
Poor flowering and narrow leaves are due to reversion disease which is spread by the blackcurrant gall mite. Plants suffering from this dise...
Frit Fly is the most common pest on sweet corn plants. The larvae burrow into the plant during June and early July at the seedling stage. Sm...
Silver leaf is a common disease on Plums but can also attack Apple, Apricot, Almonds, Cherry and Hawthorn, Laburnum trees along with Roses a...
Pea thrips can attack the flowers, leaves and pods of peas and broad beans. This pest is more troublesome in hot, dry summers. The larvae ...
The main symptom of magnesium deficiency in tomato plants is yellowing between the leaf veins and around the margins starting on the lower, ...
Yellowing between the leaf veins and around the margins starts on the lower, older foliage and gradually moves up the plant. Green bands ...
The splitting of tomato skins can occur quite frequently on tomatoes grown outdoors and in the greenhouse. It is caused by the onset of wet ...
The toughness of tomato skins is dependent on the way the crop has been grown. Too much heat or sunlight will result in tough skins so the g...
Bacterial canker can attack apricot, cherry, peach and plum trees. The trees are infected during wet, windy, weather in autumn and damp co...
Onion downy mildew is a common fungal disease that attacks onions, chives, shallots and salad onions. It is widespread especially in cool, d...
Fig rust is a fairly common FIG TREE disease. It attacks the leaves and shows up as light orange spots which increase in size and spread to ...
Rust is a very common fungal disease on fuchsias and also attacks the weed willow herb and related plants. The spores are spread in the wind...
Quite healthy sweet pea buds may suddenly be shed by healthy SWEET PEA PLANTS. The cause is excessive moisture either as a result of ...
The reddish/purple markings on the the underside of impatiens leaves are a natural pigmentation in the leaf. It is most commonly found on re...
Blackleg is a bacterial disease that is a common and wide spread, often appearing from June onwards, especially on heavy clay soils, under w...
The reason for ASTER PLANTS suddenly collapsing is most likely due to a disease known as Aster Wilt. This is caused by a soil-borne fungus a...
The lack of heads on BROCCOLI and CAULIFLOWER can be due to a pest or disease attacking the growing tip. Other possible causes can include n...
In recent years impatiens have started to die prematurely when they are still in full flower. The foliage of affected plants turns yellow, d...
NASTURTIUMS naturally thrive in poor sandy soils in full sun. Plants that are producing a lot of leaf growth and very little flower s...
The fungal disease powdery scab is fairly common and widespread especially where the potatoes are grown on heavy, clay soils and in wet seas...
Raspberry spur blight is a fungal disease that mainly affects raspberries but can also occasionally attack loganberries. It most frequently ...
Tomato Blight is a common fungal disease that can be serious in wet seasons but less so in dry summers. It is more likely to attack tomatoes...
Blossom End Rot is a disorder that causes the development of a blackened leathery dark brown or black patch at the flower end of the fruit. ...
This sounds very much like lily disease which is a common fungal disease, especially virulent in wet seasons. The spores are spread in the a...
The silvering of tomato leaves is due to a genetic disturbance within the plant. Silver flecking on the leaves and stem is not a serious pro...
Blindness is the failure of a plant to flower despite producing healthy foliage and is a common problem with bulbs. It is the result of a...
The top flower of the FOXGLOVE is rather unique in comparison with those of the main stem. Whereas the flowers of the main stem are symmetri...

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