Mites are more of a problem in hot locations and during hot summers. I have tried looking up on web sites what it is and what to do, but have found nothing. Raspberry Cane Borer Oberea bimaculata. The adult raspberry crown borer, which is a clear-winged moth that resembles a black and yellow wasp, lays its eggs on the underside of raspberry leaves in late summer. It has gone to the ground cover plants also. It should go in the trash - not compost.Again, it appears that a variety of fungal diseases may be at play in your garden.The raspberries are subject to a number of dieases. The life cycle of the Raspberry Sawfly is as follows: The larvae overwinter just below the soil surface surrounding the plants. I pulled my entire basil crop out in early August, 2012 because of the Basil downy mildew - just in order to have Something to harvest! I have just pulled three more Japanese beetles from my plants this morning - this time the geraniums. These spots often drop out creating holes in the leaves. You have a little chore to take care of! Leaves will change, sometimes dramatically, during the early stages of infection. Ask an Expert is made up of groups and individual experts. Diseases associated with cane or lateral death – browning of leaves is one of the first symptoms exhibited by a dying cane or lateral. Without one or more of these, plants will start to display physiological symptoms – low nitrogen causes weak, yellow leaves, while a potassium deficiency results in poor harvests and discoloured foliage. Raspberry Foliage Iron deficiency Terminal leaves severe chlorosis followed by marginal and intervenal necrosis. The symptoms usually appear on black raspberries in June or early July, and on red raspberries about a month later. The Blackberry stems have ridges and angles while the Black raspberry stems are smoothly round-shaped (nearly circular in diameter). The cannas should be fine once you've cleaned them up and stored them away for the winter. So raspberries and blackberry fans: get out your pruning shears. Raspberry leaves are turning black and curling up and dying. The Black raspberry stems are notably glaucous (bluish white). Eventually, the cane may be completely defoliated except for a few leaves at the top. Agrobacterium tumefaciens is a bacteria that produces galls on the crown of a raspberry plant. Since then I have planted them in different areas, just to avoid any possible spores that may have overwintered in the soil.Next year look for plants that are labeled resistant to these diseases. The lower leaves of diseased plants may at first appear to have a dull green cast as compared to the bright green of normal leaves. The plant has always been a very healthy plant. The leaves on my newly transplanted raspberry plants and a canna lilly have suddenly turned black. Raspberry leaves are turning black and curling up and dying. ... turn black and die. The plant has always been a very healthy plant. Raspberry Leaf Potassium deficiency Marginal leaf scorch and intervenal browning; leaves tend to curl backward towards under surfaces, but scorched margins turn forward. The new leaves of the plant develop greenish black spots. I pulled leaves and stalks off the canna lilly because it was so bad this morning, so I have only the one photo and I hope you can get the idea from that. and other woody plants. Red Raspberry Problem. All the plants have plenty of air. Both plants have leaves which alternate along the thorny stems. Any gardener would be distressed to find the leaves of once-flourishing raspberry (Rubus idaeus and cultivars) plants turning brown. Raspberry rust (sometimes called raspberry yellow rust) is a disease of the foliage of raspberries, caused by the fungus Phragmidium rubi-idaei. Raspberry nutrient deficiency. I purchased the Raspberry Shortcake Dwarf Thornless raspberry bush that is having issue. I would like to know if there is any spray I can use to stop it. Cane diseases can infect red raspberry, black raspberry and blackberry. Growths turn brown or black as season progresses. Thanks for the photos of the basil and the canna but there aren't any of the raspberries.Your basil has Basil Downy Mildew. No insects on the plant. Blackberry psyllid, (Trioza tripunctata), causes severe curling on both thornless and thorny blackberries. Some background. I attached a couple pics below. Raspberries and blackberries grow on similar bushes and produce clusters of berries at the end of the summer. If plant is dead, inspect roots for hard, woody tumors (galls). It has started again this year and is spreading. Crown Galls – Not visible above ground, but symptoms may present as water stress and nutrient deficiency. 308, manganese deficiency) 308. The disease is often associated with attacks by raspberry cane midge. If the plant is infected severely the leaves will fall off early creating bare plants. What could be causing this, and is it contagious? You may want to consider early spraying next year in order to thwart some of these diseases. Hot Weather Hot air, especially sudden rises in temperature, can leach all the moisture out of your plants and cause blackened leaves. Lacking a photo to go by, take a look at this fact sheet and see if you can find symptoms that match what you are seeing on your raspberries:http://www.extension.umn.edu/Garden/yard-garden/fruit/integrated-pest-management-for-home-raspberry-...I suspect the canna lily is showing signs of botrytis, or grey mold:http://extension.illinois.edu/focus/index.cfm?problem=gray-mold-ibotrytisiThis has been a banner year for fungal diseases because of the wet, coolish nights. Cane blight and spur blight can cause significant damage to red raspberry. It can cause some damage to red raspberries as well. Answer. Mosaic-infected plants are many times more stunted each year. I imagine it is airborne in order to travel so fast. This sounds like a fungal, or bacterial problem. These plants are not related, so there may be more than one kind of disease going on.I'll look for your reply. But in severe cases, such as when the coloring is due to a disease, you might have to discard the entire plant. I was given raspberry plants, most of which died immediately following the transplant. Browse a wide range of fruit and vegetable varieties from Thompson & Morgan, where Saga customers can get 10% off. Later blight may affect the stem along joints. Blight can come early in the planting year or much later, depending upon the type of fungus. http://www.extension.umn.edu/Garden/yard-garden/fruit/integrated-pest-management-for-home-raspberry-... http://extension.illinois.edu/focus/index.cfm?problem=gray-mold-ibotrytisi. Your home-made spray won't help, and it may cause some damage to your plants. The condition causes the roots to appear black and slimy as opposed to creamy-white and leaves turn brown and eventually fall off.  As the leaves get older the spots turn a white/gray color. Q. Ask an Expert is made up of groups and individual experts. http://www.extension.umn.edu/garden/yard-garden/vegetables/basil-downy-mildew/. Anthracnose is most severe in black raspberries. It causes tips of canes to turn black and curl down. Son't give up! Thank you for all the information. Aphids may also cause the petioles of leaves to twist and curl when they feed on them. Raspberries planted in poorly draining soils with excessive moisture become susceptible to verticillium wilt, a fungal disease in the soil. Linda Andrean. Also, raspberries (even little ones) have tiny thorns or prickles along the stem.Well...Better luck next year. (cf. The straw minimized splashing water that throws the spores around.I hope this answers your questions. Last fall I planted 4 raspberry plants, two Heritage and two Killarney. Because you've got more than one fungal disease, make sure to check the label to make sure you're buying the right product.Another good way to minimize fungal diseases is by applying a deep straw mulch around your seedlings (or starts). Agrobacterium usually enters the raspberry through a fresh wound or natural opening. One of the most common problems gardeners experiences with growing raspberries is leaves that turn brown. Recently the two Heritage have had a handful of leaves curl up and fold in half so you only see the bottom of the leaf which looks very white. They just munch, munch and munch the leaves 24 hours a day. Make sure plants have lots of air circulation to prevent it. Black raspber… I am at the point where I am pulling things out and immediately putting them in disposable plastic yard bags. They may be seen with the naked eye, often grouping up on raspberries as they feed. In this case, the fungi appear to only attack black raspberries as well as blackberries and dewberries. The canes turned brown and the berries shrivelled up. Dear Mary, Almost overnight it spread to several other plants. Check the plant starting with the leaves and heading to the roots looking for damage or excessively dry soil. The Raspberry Sawfly caterpillar. These symptoms disappear in the second year, but leaves grow slowly in spring, turning … Plants may wilt, be stunted, or die from this bacteria. The raspberry have been turning for about 3 days and the canna lilly just started. You will see attacks from mid-summer. Eventually, leaves may wither and die, and fruit may turn brown and dry up. The maggots damage canes, making them turn purple or black where they burrow inside. The soft, round, tan gall becomes black, irregular, rough, and corky. I have tried looking up on web sites what it is and what to do, but have found nothing. Leaves may be reduced in size, plants may produce little or no fruit. As the condition worsens the leaves begin to turn … The drainage seems okay and I don't think they are being over-watered but the leaves are slowly turning yellow. This very much depends on when the leaves are turning yellow. I have a row of raspberries, but some of the plants have started to wilt and the leaves are turning yellow. You will have to investigate a little more to determine the cause of lack of water into the leaves. Cane blight is a disease of raspberries caused by the fungus Paraconiothyrium fuckelii, which infects the developing canes through wounds, causing them to die back. raspberry leaves turn black. Starting at the base of the cane and progressing upward, leaves wilt, turn yellow, and drop. Raspberry leaves curling is just one sign of raspberry leaf curl virus, an incurable disease vectored by the small raspberry aphid (Aphis rubicola). Raspberry Leaves Turning Brown. If the leaves on your raspberry bushes are turning red prematurely, or entire canes are wilting, you're dealing with raspberry crown borers. They were healthy at first but don't seem to be doing so well now. Identifying Ring Spot and Bushy Dwarf Viruses. The raspberry have been turning for about 3 days and the canna lilly just started. The symptom that I see in the image shows dehydrated tissue along the leaf margins and extending between veins. The leaves on the raspberry bushes started turning yellow last September, then turned brown and fell off. This issue can have multiple causes, and the damage is usually reversible if caught in time. The fungus produces a number of different types of spore depending on the time of year and, as these different spores are produced, so the appearance of the disease changes. Today one of the Killarney plants had a few leaves that looked similar. Spider mite infestation causes yellow spots that turn into bronzed foliage. The reasons can be many and may occur together. I pulled out the basil/raspberry plants. Red raspberries are particularly susceptible to fire blight. Hot weather, lack of water in the soil, and/or damage somewhere between the leaf and the roots which can include cankers, crown rots or root rots. If you can turn the soil over occasionally in late winter to early spring the birds may well feed on the larvae. Small raspberry aphid (Aphis rubicola) is a vector of raspberry leaf curl virus. Raspberry leaves should remain green through the growing season. I have attached 2 photos from the raspberries. That is interesting that you say the two photos are of basil. That's a "good one" if they are basil. At first, … Symptoms appear in the early spring as new shoots begin to emerge. It may also be helpful to remove wild raspberries, blackberries, and other brambles from the vicinity of your raspberry or blackberry patch, as they are a major host of future cane borer infestations. When an infection begins attacking the raspberry bush, it will create toxins and proteins that will kill the plant’s immune system. I feel as though I have been struck with several plagues this summer - never experienced this before. The raspberry cane borer causes wilted and drooping tops of canes. As a result, many of the plant’s cells die off leaving black spots on the berries. Black spots on your raspberries are just dead or decaying areas of the berry most likely caused by a fungal or bacterial infection. Leaves are mottled with light green or yellowish areas. The leaves on my newly transplanted raspberry plants and a canna lilly have suddenly turned black. Gardening is lots of fun/work/education and pleasure. The plant is not able to keep up with the water demands of the leaf tissue. Remove and burn infected leaves and canes. He has 10 black thumbs, no fingers so that might be part of the problem. More raspberry aphid information. What do I do. Unfortunately if you have missed the window of time that preemptive spraying for these diseases, your best bet is to make sure the plants are not watered overhead, all debris is picked up, and any leaves showing signs of disease are picked out and disposed of.I know this is difficult to hear. I pulled one raspberry because it was totally black. Often, they arch stiffly or curl downward and change colors; red raspberries usually develop yellow leaves, while black raspberries turn very dark green, with a greasy appearance. The infestation is normally noted when the stem near the soil begins to turn dark brown or black. This is a relatively new disease in Minnesota but it has become a world-wide problem with basil plants:http://www.extension.umn.edu/garden/yard-garden/vegetables/basil-downy-mildew/It's difficult to control, and as with many fungal diseases, spraying with a fungicide needs to begin before any symptoms are noted. No insects on the plant. Another difference can be seen in a closer view of the stems. Problem: Raspberry Leaf Spot Affected Area: leaves Description: Only on Raspberries. Wilting may be evident at the tips of new shoots; Two rings of punctures about ½ inch apart, and located 4-6 inches below the growing tip, are apparent where the beetle has laid eggs; Adult is slender, ½ inch long, black, with yellow stripes and a yellow head with two black … You should be able to tell if they are basil or raspberries by the smell. 307. Drought – Raspberry leaves may begin to die from drought, but recover upon watering, leaving the edges of leaves brown. Black raspberry leaves turn black and rotten and the plants yield fewer berries. To control spider mites, provide adequate water and spray the undersides of leaves as needed. Plate No. I added compost to the bed in March. You are doing the right thing by eliminating all plant debris. However, I had to go out of town for 2 weeks to help my mother so my husband was taking care of my garden. Fire Blight. Arthuriomyces peckianus and Gymnoconia nitens are two additional fungi that may cause rust on raspberry leaves. I have a couple small, young raspberry plants that I bought bare root at Lowe's about a month ago. The photos I took were the supposedly raspberry plants. Sap beetles, also known as picnic beetles, are black insects that eat raspberry fruits. Linda...How odd! Raspberry Crown Borer . anything I can do? Soil nematodes spread red raspberry ringspot, caused by the tomato ringspot virus. Cane Galls – White growths on canes in early summer. After one year of infection with no symptoms, diseased plants show yellowing veins and yellow rings on new canes. In the last few days I've noticed the edges on my raspberry plants are turning brown and it doesn't seem to be improving. Raspberry plants are hardy, fast-growing cane plants that produce a large harvest when healthy, and picking raspberries can become a project for the whole family. Please get back to us if you still have questions. We're seeing lots of these diseases lately, with all of the rain.We would need to see some good close-up photos of the black leaves and of the canes in order to proceed. I also have a serious infestation of powdery mildew which I have been treating with baking soda/dishsoap/crisco oil (YouTube video), but it is not helping.This has been on my vegetables, starting with green beans and cucumbers. Some cane disease fungi survive on wild Rubus spp. You can also plant resistant varieties.