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 new one in our area bores into the centre of the Agapanthus plants and also attacks the flower buds. Its in a pot in full sun watered daily but some leaves are now turning yellow. 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. Is your lily-of-the-Nile growing with a southwestern or southern exposure? If so, suspect Anthracnose, a catch-all phrase for a variety of fungal diseases. The worm … (beneficial nematodes). But then there are leaves that don’t come off so easily. These are two other contributors to sun scald. Replant the lily-of-the-Nile in the new pot, water lightly and then don’t water again until the soil is bone dry. Thanks everyone. These are my plants. The plants grow and spread by a partially buried rhizome, producing fleshy bundles of tender leaves and 36- to 60-inch tall inflorescence. Symptoms include dead-tipped, lighter green olive leaves in the middle of the plant. Log in or register to join the conversation. 12 years ago. 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. I suspect you have the same problem as me. If the plant's foliage turns yellow, it might have pests or sunburn. 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. 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. How often do you water the lily of the Nile? Almost all the plant is like this now. Keep applying the soap weekly until the infestation is gone. If one of your plants is infected with root or bulb rot, it can’t be saved. Agapanthus, or "Lily of the Nile," is a perennial plant species prized for its use in the garden. I repotted it up a size when bringing it indoors. The first thing you’ll want to do is to test the soil to be sure it’s not the culprit. Finally, if nothing else seems to fit, the agapanthus may have bulb rot. sprayed on the leaves (both sides). As they were reastablishing they were fed so that may have made a difference. Any ideas why? Use snips to cut away the diseased roots. If you ever are looking for a snail in your garden, its a sure bet you will find one under an agapanthus plant. For this reason, it's important to leave the foliage in place when blooming ends for the season. Check the surface is dry before you water. Since that time they have increased by 2/3rds so they make big plants. Common Agapanthus Problems. The plants ayellowed went slimy and were staring to die. We grow Agapanthus africanus, the largest of the family, hailing from the Cape of Good Hope in South Africa. 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. Agapanthus is the signature plant in our coastal garden and deservedly so. Bulb rot and root rot are both agapanthus problems that start underground. A sheath leaf wraps around the stem at its base and is often reluctant to let go. Typically reaching 60cm-1.8m (2-6ft), a few dwarf varieties such as ‘Lilliput’ with a height of 40cm (16in) are also available. Will Agapanthus Leaves Grow Back After A Harsh Trimming? In the case of the agapanthus, it’s most likely Colletotrichum gloeosportioides. 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. Test the soil again in two months and reapply the sulfur if needed. If, on the other hand, the pH is within the normal range we’ll need to look at other possibilities. If so, suspect Anthracnose, a catch-all phrase for a variety of fungal diseases. 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. Do the leaves have yellow or brown spots? 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. 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. A good liquid feed is a sensible way to go Jason. Follow the instructions on the label. My agapanthus leaves are also yellowing and are in bud, so I will follow advice and give them a liquid feed - probably tomato feed. 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. Yellowing of the areas between the veins (interveinal chlorosis) is usually indicative of manganese, iron or magnesium deficiency. They aren't particularly greedy plants, but anything in a pot needs a bit of help when it wants to flower. Growing plants is always a matter of patience. All I know is I am pleased I gave them plenty of room, they needed it. Unless some of the forums many sages can advice of anything else? It's not the only cause - but without any more to go on, the obvious answer is the first one to try. The best way to get rid of these creeps is with. 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. 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. June 2018. Comments (15) Mrs_B . Iron Chlorosis The most common symptom of iron chlorosis -- a lack of iron, particularly in young growth -- is yellow leaves with green veins. Use preventive fungicides on your remaining agapanthus the following season. Even if you pull and pull, they stick to the plant, decreasing its ornamental value. Get rid of the fungus with a fungicide containing mancozeb or captab. You’ll need to water right after the application. Mealybugs and red spider mites love dining on Agapanthus.. Ensure that the plant gets plenty of water during dry periods, but water at the base and avoid splashing soil onto the plant. May 21, 2020 - Agapanthus is typically problem-free when its basic requirements are met. Copyright © 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). If left uncontrolled, this pest can quickly devastate your prized agapanthus plants by chewing through the leaves. They were moved here two years ago as I inherited them and they were in the wrong place. Follow the label precautions and apply it on a windless day. Yellow leaf tips indicate overwatering or waterlogged soil. One of the Agapanthus’ most common maladies is yellow foliage. If you’re growing the agapanthus indoors, you may want to take it outdoors for treatment. Too much water leaches iron from the root zone, so if you think you may be overwatering, try cutting back. 2020 Gardenologist.org. One of which eats the Agapanthus leaves and I do not consider it much of a problem. 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. Keep the soil around the agapanthus free of debris, apply a layer of fresh mulch around the plant and prune out the yellow foliage. 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. My agapanthus were full of blooms and transplanted into my garden in perth almost 2 months ago. Full disclosure: I get commissions from purchases made through links in this post. Numerous cases involving the die-back of large numbers of agapanthus plants have recently been reported in the Western Cape. 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. 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. Can anyone identify my wildlife and suggest treatment. Plant the tall varieties 30 to 45 cm apart. Others attack their arching green leaves or rot their roots or bulbs. Since they live in the soil, drench the soil with a product that contains. 16 years ago. you certainly have a lot.Shaakks In some countries, and even in the UK’s Isles of Scilly, it can “go wild” and become a nuisance. Agapanthus Care. Check the roots carefully for signs of life. It’s important to keep these guys alive before using them so if you won’t be drenching the soil immediately, refrigerate them. 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. Are you watering too much? Most agapanthus have a long flowering period usually from mid November to end of January. Email Save Comment 15. Ensure that the plant gets plenty of water during dry periods, but water at the base and avoid splashing soil onto the plant. If you must transplant the hollyhock, fall is the best time. It’s important to keep these guys alive before using them so if you won’t be drenching the soil immediately, refrigerate them. I haven’t received any products for free — all of the ones I refer you to are those that I purchase and use. vtandrea. Do your best to eliminate these common reasons for yellowing leaves, then wait to see what happens. Agapanthus can go rotten in such circumstances – the leaves become white then brown and slimy from the base. It's not the only cause - but without any more to go on, the obvious answer is the first one to try. spread on top of the soil to lower the pH. same thing happened to me ages ago. We may get paid if you buy something or take an action after clicking one of these. Here are his tips for growing healthy agapanthus that will produce masses of flowers, year after year. I would remove any really yellow leaves and cut back on the watering. they require no maintenance only to cut the old flower heads before they seed and pull away the leaves as they turn yellow. Yellowing leaves is typically a sign of over watering, but can also be from a lack of nitrogen. Don't worry, if the plant regains its health, it's possible that new leaves will fill in during the next growing season. But I wonder if it is actually getting into the problem. Iron deficiency affects the youngest leaves first, whereas the symptoms of manganese and magnesium deficiency tend to start in the older leaves. Indoors, dispose of the potting soil and sanitize the growing container (learn how, here). 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. Use a layer of sulfur spread on top of the soil to lower the pH. Then, apply a fungicideevery week to 10 days. As you can imagine, a large enough infestation can wreak havoc on the plant’s leaves, turning them quite yellow. Have you fed it - is it showing any signs of flowering? Do the leaves have yellow or brown spots? Propagation … The fungus Macrophoma agapanthus may attack agapanthus's foliage, causing the leaves to die back. I also wouldn’t add cow manure to potting mix. Agapanthus have mounds of strappy, bright green leaves. yellowing leaves on potted agapanthus. 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. In the case of the agapanthus, it’s most likely Colletotrichum gloeosportioides. In the UK if my agapanthus leaves yellowed in the growing season I would put it down to over-watering. 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. 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. Is pot big enough,? 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. 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. These little critters scrape the foliage to create an opening from which to suck out the juices. Most leaves simply turn yellow and drop off when their life’s work is done. I feed mine with tomato feed , weak, but at every watering during the summer. All rights reserved. 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. What on earth is happening? Plants that are crowded will decrease or stop blooming completely. 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. The distinctive yellow and black striped caterpillars tend to bore into the roots for protection over winter. Keep the soil around the agapanthus free of debris, apply a layer of fresh mulch around the plant and prune out the yellow foliage. They show themselves above ground in yellow, wilted leaves and sometimes stunted plants. 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? strongylodon, Jul 7, 2012 #4 Quote in Conversation. Some links may be affiliate links. Growing agapanthus for the first time. One of the Agapanthus’ most common maladies is yellow foliage. You’ll need to water right after the application. Look for a fertilizer with a high 1st number (13-13 … If you’re growing the … It grew tremendously, putting out a lot of roots which seemed to gravitate to the surface. Yellowing leaves on most plants can be a sign of a food deficiency of one sort or another. 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. 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. Since they live in the soil, drench the soil with a product that contains Steinernema feltiae (beneficial nematodes). You can rectify this by adding extra organic matter, like compost or bark chips, to the soil. Agapanthus' wide leaves absorb sunlight, providing energy for the next year's blooming season. 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 this doesn’t work, remove the plant, enclose it in a plastic bag and dispose of it. Come to think of it, it had been a very dry spell. The most common symptom of iron chlorosis -- a lack of iron, particularly in young growth -- is yellow leaves with green veins. This caterpillar has very distinctive black dots spaced all over its body. A good liquid feed is a sensible way to go Jason. “This isn't life in the fast lane, it's life in the oncoming traffic.”. Follow. Even after you correct the problem, it's still likely that the yellow leaves will fall off with time. 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.