Email Save Comment 15. It's right down where the leaves emerge from the bulb. One of the Agapanthus’ most common maladies is yellow foliage. Keep the soil around the agapanthus free of debris, apply a layer of fresh mulch around the plant and prune out the yellow foliage. Use snips to cut away the diseased roots. Ensure that the plant gets plenty of water during dry periods, but water at the base and avoid splashing soil onto the plant. The only way to know for sure is to carefully dig the plant up and inspect the roots and the bulb for signs of rot (they’ll be soft, and the roots and bulb will be discolored). Do the leaves have yellow or brown spots? Since they live in the soil, drench the soil with a product that contains. Thanks everyone. It’s always best to follow the label instructions but I’ve found that I’ll typically get a reduction of 1 point in pH with 12 pounds (per 100 feet) of a soil amendment containing sulfur. If the soil is alkaline, with a pH of more than 7, it needs to be lowered to at least 6.5 for the agapanthus' roots to effectively use the iron present in the soil. Too much shade causes the leaves of the plant to fall over and decreases the number of blooms. It’s always best to follow the label instructions but I’ve found that I’ll typically get a reduction of 1 point in pH with 12 pounds (per 100 feet) of a soil amendment containing sulfur. One of which eats the Agapanthus leaves and I do not consider it much of a problem. But I wonder if it is actually getting into the problem. Log in or register to join the conversation. The most common symptom of iron chlorosis -- a lack of iron, particularly in young growth -- is yellow leaves with green veins. These are two other contributors to sun scald. The plants grow and spread by a partially buried rhizome, producing fleshy bundles of tender leaves and 36- to 60-inch tall inflorescence. I feed mine with tomato feed , weak, but at every watering during the summer. Full disclosure: I get commissions from purchases made through links in this post. It's not the only cause - but without any more to go on, the obvious answer is the first one to try. The new one in our area bores into the centre of the Agapanthus plants and also attacks the flower buds. If you ever are looking for a snail in your garden, its a sure bet you will find one under an agapanthus plant. One of the Agapanthus’ most common maladies is yellow foliage. Then, apply a fungicideevery week to 10 days. Check the roots carefully for signs of life. The agapanthus, or lily of the Nile as it is commonly known, is such an easy grower (best in USDA zones 9 through 11) but no plant is completely free of problems. Hi Annell,most Agapanthus have yellow leaves as the leaves die off.Just strip them of as they look untidy and attract snails.Maybe give them a feed,although being at the end of there flower period [where I live] maybe not.What colours are they? yellowing leaves on potted agapanthus. Your right about root constriction, mine need to grow into each other and get crowded out, then they will probably flower. Iron deficiency affects the youngest leaves first, whereas the symptoms of manganese and magnesium deficiency tend to start in the older leaves. Agapanthus' wide leaves absorb sunlight, providing energy for the next year's blooming season. Appearance Agapanthus species and cultivars have long, strap-like, fleshy leaves that form dense clumps of evergreen or deciduous foliage. they require no maintenance only to cut the old flower heads before they seed and pull away the leaves as they turn yellow. same thing happened to me ages ago. Use preventive fungicides on your remaining agapanthus the following season. A friend gave me a nice clump of agapanthus last spring, which I put into a medium size pot and left outside for the summer months. 12 years ago. Unless some of the forums many sages can advice of anything else? My agapanthus were full of blooms and transplanted into my garden in perth almost 2 months ago. This caterpillar has very distinctive black dots spaced all over its body. The best way to get rid of these creeps is with insecticidal soap sprayed on the leaves (both sides). If you must transplant the hollyhock, fall is the best time. Are you watering too much? June 2018. If you’re growing the … Agapanthus hail from the south African Cape, so they appreciate plenty of sunshine. If, on the other hand, the pH is within the normal range we’ll need to look at other possibilities. We grow Agapanthus africanus, the largest of the family, hailing from the Cape of Good Hope in South Africa. You can rectify this by adding extra organic matter, like compost or bark chips, to the soil. Check for root rot, a fungal disease caused by the Phytophthora and Phythium microorganisms, by checking plants for stems that are discoloured at the bases, and leaves--usually lower on the plant-- that are yellow and wilted. The only one I have in bud is a recently bought A Luly. Look for a fertilizer with a high 1st number (13-13 … All I know is I am pleased I gave them plenty of room, they needed it. Bulb rot and root rot are both agapanthus problems that start underground. Too much water leaches iron from the root zone, so if you think you may be overwatering, try cutting back. as it is commonly known, is such an easy grower (best in USDA zones 9 through 11) but no plant is completely free of problems. It grew tremendously, putting out a lot of roots which seemed to gravitate to the surface. If you see white, healthy-looking roots you may be able to save it (but don’t get too excited, typically the plant is a goner at this point). These are my plants. Any ideas why? Agapanthus have mounds of strappy, bright green leaves. Even after you correct the problem, it's still likely that the yellow leaves will fall off with time. Fungus gnat babies (larvae) munch on the lily-of-the-Nile’s roots, disrupting the flow of moisture throughout the plant and turning the leaves yellow. Can anyone identify my wildlife and suggest treatment. Do the leaves have yellow or brown spots? spread on top of the soil to lower the pH. Some links may be affiliate links. Yes, agapanthus produces the best flowers when it’s grown in full sun but when the weather heats up, that sun may just be scalding the leaves. The fungus Macrophoma agapanthus may attack agapanthus's foliage, causing the leaves to die back. If one of your plants is infected with root or bulb rot, it can’t be saved. Yellowing leaves on most plants can be a sign of a food deficiency of one sort or another. As they were reastablishing they were fed so that may have made a difference. Yellowing of the areas between the veins (interveinal chlorosis) is usually indicative of manganese, iron or magnesium deficiency. The leaves on this plant naturally turn yellow and die back over winter, but if they are pale with stripes and the plant flowers poorly, then your agapanthus has a virus and is best thrown out. According to agapanthus grower and expert Steve Hickman, the most common problem with agapanthus is that the plant has plenty of leaves, but no flowers. I believe these plants are native to hot, dry countries and although they need water, they hate standing in wet. “This isn't life in the fast lane, it's life in the oncoming traffic.”. Symptoms include dead-tipped, lighter green olive leaves in the middle of the plant. They were moved here two years ago as I inherited them and they were in the wrong place. Question From: ruby villamil in mortdale, sydney NSW Nature of problem: leaves of clivia and agapanthusut were trimmed and many stems were left without leave and chopped to close to ground. Do your best to eliminate these common reasons for yellowing leaves, then wait to see what happens. Typically reaching 60cm-1.8m (2-6ft), a few dwarf varieties such as ‘Lilliput’ with a height of 40cm (16in) are also available. In some countries, and even in the UK’s Isles of Scilly, it can “go wild” and become a nuisance. Use a layer of sulfur spread on top of the soil to lower the pH. Since they live in the soil, drench the soil with a product that contains Steinernema feltiae (beneficial nematodes). In the case of the agapanthus, it’s most likely Colletotrichum gloeosportioides. because they're commonly known as lilies-of-the-Nile, but prolonged wet conditions expose them to several fungal diseases.One of those diseases transforms their globes of flowers into balls of fuzz. Keep applying the soap weekly until the infestation is gone. I repotted it up a size when bringing it indoors. You can do that with a soil testing kit available at Home Depot or Lowe’s or at your favorite nursery and online at Amazon.com. Agapanthus, or "Lily of the Nile," is a perennial plant species prized for its use in the garden. Is it getting enough water? It’s important to keep these guys alive before using them so if you won’t be drenching the soil immediately, refrigerate them. Will give it a feed, no signs of flowers so far. sprayed on the leaves (both sides). Follow the label precautions and apply it on a windless day. (beneficial nematodes). As you can imagine, a large enough infestation can wreak havoc on the plant’s leaves, turning them quite yellow. Follow the instructions on the label. Fill a new, sterilized planting pot with fresh potting soil. Whenever any plant’s foliage begins to turn yellow we first suspect iron chlorosis, especially if the yellowing is occurring on new growth yet the veins remain green. If so, suspect Anthracnose, a catch-all phrase for a variety of fungal diseases. You may not expect water to bother Agapanthus plants (Agapanthus spp.) In the UK if my agapanthus leaves yellowed in the growing season I would put it down to over-watering. Agapanthus has been used medicinally for cardiac complaints. Numerous cases involving the die-back of large numbers of agapanthus plants have recently been reported in the Western Cape. Sturdy stems shoot up in summer carrying loosely spherical heads (up to 25cm (10in) across) of trumpet-shaped flowers – usually in varying shades of blue, with a few white selections too. It’s important to keep these guys alive before using them so if you won’t be drenching the soil immediately, refrigerate them. ! Agapanthus is the signature plant in our coastal garden and deservedly so. Agapanthus is an easy grower but, like all plants, it is susceptible to environmental problems, and a few pests that can turn the foliage yellow. Its in a pot in full sun watered daily but some leaves are now turning yellow. Common Agapanthus Problems. If you could persuade some of your cricketers to take up gardening instead of sport we'd be very grateful If you have non-blooming agapanthus plants or you’re trying to determine the reasons for an agapanthus not flowering, help is on the way. How often do you water the lily of the Nile? The best way to get rid of these creeps is with. Then, apply a fungicide every week to 10 days. Since that time they have increased by 2/3rds so they make big plants. A sheath leaf wraps around the stem at its base and is often reluctant to let go. I haven’t received any products for free — all of the ones I refer you to are those that I purchase and use. Replant the lily-of-the-Nile in the new pot, water lightly and then don’t water again until the soil is bone dry. If this doesn’t work, remove the plant, enclose it in a plastic bag and dispose of it. Growing agapanthus for the first time. Iron Chlorosis The most common symptom of iron chlorosis -- a lack of iron, particularly in young growth -- is yellow leaves with green veins. Indoors, dispose of the potting soil and sanitize the growing container (learn how, here). Test the soil again in two months and reapply the sulfur if needed. The parent moths lay their eggs on the underside of the leaves and the cycle continues as the caterpillars hatch and bore down through the leaves towards the root system. Others attack their arching green leaves or rot their roots or bulbs. It is believed that this is caused by an as yet unidentified worm which bores down the stem of the plant and subsequently eats the rhizome. The worm … In the case of the agapanthus, it’s most likely Colletotrichum gloeosportioides. We have not been given free products or anything else by Amazon or any other company when we mention them or their products on the site. Not enough iron and or sulphur. I suspect you have the same problem as me. Excuse dead looking bits they are the Alliums dying back.. Test the soil again in two months and reapply the sulfur if needed. Yellow leaf tips indicate overwatering or waterlogged soil. Damage from herbicide sprays that drift onto the agapanthus foliage includes curling, cupped leaves and brown or dead spots on the leaves. My agapanthus leaves are also yellowing and are in bud, so I will follow advice and give them a liquid feed - probably tomato feed. Fresh potting mix is already very high in organic matter and doesn’t need more, and cow manure needs to be well composted before you introduce it to plants. Comments (15) Mrs_B . Here are his tips for growing healthy agapanthus that will produce masses of flowers, year after year. 2020 Gardenologist.org. Agapanthus Care. strongylodon, Jul 7, 2012 #4 Quote in Conversation. It's not the only cause - but without any more to go on, the obvious answer is the first one to try. The plants ayellowed went slimy and were staring to die. A good liquid feed is a sensible way to go Jason. you certainly have a lot.Shaakks The distinctive yellow and black striped caterpillars tend to bore into the roots for protection over winter. Even if you pull and pull, they stick to the plant, decreasing its ornamental value. Healthy Agapanthus plants grown in optimum conditions are generally problem-free, though rhizome frost damage is a common issue in cold winters, even for the more hardy types, and less vigorous plants can succumb to viral diseases and pests. Keep applying the soap weekly until the infestation is gone. If left uncontrolled, this pest can quickly devastate your prized agapanthus plants by chewing through the leaves. Don't worry, if the plant regains its health, it's possible that new leaves will fill in during the next growing season. These little critters scrape the foliage to create an opening from which to suck out the juices. But then there are leaves that don’t come off so easily. Fungus gnat babies (larvae) munch on the lily-of-the-Nile’s roots, disrupting the flow of moisture throughout the plant and turning the leaves yellow. vtandrea. Or at least they come readily loose when you tug on them. Gardenologist.org is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by linking to products for sale at Amazon.com. Since excess moisture at the roots is most likely how the plant came down with rot, ensure that the new pot has plenty of holes for drainage and that you use a quality, quick-draining potting soil. Propagation … What on earth is happening? Most agapanthus have a long flowering period usually from mid November to end of January. Agapanthus plants are hardy and easy to get along with, so you are understandably frustrated when your agapanthus does not bloom. I would remove any really yellow leaves and cut back on the watering. Check the surface is dry before you water. They show themselves above ground in yellow, wilted leaves and sometimes stunted plants. Going to try a good liquid seaweed feed. Come to think of it, it had been a very dry spell. There are a number of reasons the strap-like leaves may turn yellow so let’s dive into them and see if we can show off those gorgeous purple flowers against a backdrop of, The first thing you’ll want to do is to test the soil to be sure it’s not the culprit. The first thing you’ll want to do is to test the soil to be sure it’s not the culprit. If you dig the plants up, you’ll find the roots or bulb decayed and discolored. All rights reserved. When the flowers died i trimmed the flower stalks as recommended, but after i did so all the tall stalks and most of the base leaves have now turned yellow and died. The first year I moved them they flowered but not as many, I put that down to splitting the group , maybe it was no feed too. The flowers are arranged in a globular structure, similar to allium, and are available in white, purple, periwinkle and pink. Growing plants is always a matter of patience. Dig up the plants, divide into two or more separate plants, and replant 2 feet apart. Plants that are crowded will decrease or stop blooming completely. Is your lily-of-the-Nile growing with a southwestern or southern exposure? 16 years ago. Follow. You can do that with a soil testing kit available at Home Depot or Lowe’s or at your favorite nursery and online at. If you’re growing the agapanthus indoors, you may want to take it outdoors for treatment. They aren't particularly greedy plants, but anything in a pot needs a bit of help when it wants to flower. If the plant's foliage turns yellow, it might have pests or sunburn. A good liquid feed is a sensible way to go Jason. You’ll need to water right after the application. For this reason, it's important to leave the foliage in place when blooming ends for the season. Now it’s easy to assume that that the soil is to blame but it may just be that the soil has sufficient iron but the lily of the Nile has a problem absorbing it. Agapanthus can go rotten in such circumstances – the leaves become white then brown and slimy from the base. Will Agapanthus Leaves Grow Back After A Harsh Trimming? If the soil pH registers higher than 7, lower it to 6.5 or the plant’s roots can’t absorb the iron in the soil. Copyright © There are a number of reasons the strap-like leaves may turn yellow so let’s dive into them and see if we can show off those gorgeous purple flowers against a backdrop of green leaves, not gold. Plant the tall varieties 30 to 45 cm apart. Wanting to fill in bare beds, I planted four pot Agapanthus grown from seed two years ago which flowered last year and no buds this year. We may get paid if you buy something or take an action after clicking one of these. You’ll need to water right after the application. If the soil pH registers higher than 7, lower it to 6.5 or the plant’s roots can’t absorb the iron in the soil. Is pot big enough,? Mealybugs and red spider mites love dining on Agapanthus.. Featured Answer. Almost all the plant is like this now. Follow the label precautions and apply it on a windless day. Yellowing leaves on most plants can be a sign of a food deficiency of one sort or another. The only thing you can do is discard it to prevent the disease from spreading to … If so, suspect Anthracnose, a catch-all phrase for a variety of fungal diseases. Most leaves simply turn yellow and drop off when their life’s work is done. Yellowing leaves is typically a sign of over watering, but can also be from a lack of nitrogen. Keep the soil around the agapanthus free of debris, apply a layer of fresh mulch around the plant and prune out the yellow foliage. May 21, 2020 - Agapanthus is typically problem-free when its basic requirements are met. I also wouldn’t add cow manure to potting mix. Finally, if nothing else seems to fit, the agapanthus may have bulb rot. Have you fed it - is it showing any signs of flowering? Agapanthus, commonly called Lily of the Nile, forms a large clump of strap-like leaves. Get rid of the fungus with a fungicide containing mancozeb or captab. Ensure that the plant gets plenty of water during dry periods, but water at the base and avoid splashing soil onto the plant.