Do the leaves have yellow or brown spots? Too much shade causes the leaves of the plant to fall over and decreases the number of blooms. Comments (15) Mrs_B . Is it getting enough water? 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. yellowing leaves on potted agapanthus. A good liquid feed is a sensible way to go Jason. Agapanthus plants are hardy and easy to get along with, so you are understandably frustrated when your agapanthus does not bloom. Yellow leaf tips indicate overwatering or waterlogged soil. Numerous cases involving the die-back of large numbers of agapanthus plants have recently been reported in the Western Cape. they require no maintenance only to cut the old flower heads before they seed and pull away the leaves as they turn yellow. Symptoms include dead-tipped, lighter green olive leaves in the middle of the plant. Since they live in the soil, drench the soil with a product that contains Steinernema feltiae (beneficial nematodes). Featured Answer. Here are his tips for growing healthy agapanthus that will produce masses of flowers, year after year. 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. June 2018. 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. Keep applying the soap weekly until the infestation is gone. These are two other contributors to sun scald. If you must transplant the hollyhock, fall is the best time. Keep the soil around the agapanthus free of debris, apply a layer of fresh mulch around the plant and prune out the yellow foliage. 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. Don't worry, if the plant regains its health, it's possible that new leaves will fill in during the next growing season. The plants ayellowed went slimy and were staring to die. This caterpillar has very distinctive black dots spaced all over its body. Test the soil again in two months and reapply the sulfur if needed. Yellowing leaves on most plants can be a sign of a food deficiency of one sort or another. 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. As they were reastablishing they were fed so that may have made a difference. They aren't particularly greedy plants, but anything in a pot needs a bit of help when it wants to flower. The plants grow and spread by a partially buried rhizome, producing fleshy bundles of tender leaves and 36- to 60-inch tall inflorescence. same thing happened to me ages ago. But I wonder if it is actually getting into the problem. Do the leaves have yellow or brown spots? 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. Too much water leaches iron from the root zone, so if you think you may be overwatering, try cutting back. Agapanthus is the signature plant in our coastal garden and deservedly so. Its in a pot in full sun watered daily but some leaves are now turning yellow. These little critters scrape the foliage to create an opening from which to suck out the juices. A sheath leaf wraps around the stem at its base and is often reluctant to let go. Yellowing leaves is typically a sign of over watering, but can also be from a lack of nitrogen. Yellowing leaves on most plants can be a sign of a food deficiency of one sort or another. As you can imagine, a large enough infestation can wreak havoc on the plant’s leaves, turning them quite yellow. Since that time they have increased by 2/3rds so they make big plants. 2020 Gardenologist.org. If you’re growing the agapanthus indoors, you may want to take it outdoors for treatment. Replant the lily-of-the-Nile in the new pot, water lightly and then don’t water again until the soil is bone dry. It’s important to keep these guys alive before using them so if you won’t be drenching the soil immediately, refrigerate them. Test the soil again in two months and reapply the sulfur if needed. In the UK if my agapanthus leaves yellowed in the growing season I would put it down to over-watering. Even if you pull and pull, they stick to the plant, decreasing its ornamental value. Then, apply a fungicideevery week to 10 days. In the case of the agapanthus, it’s most likely Colletotrichum gloeosportioides. 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. Agapanthus, commonly called Lily of the Nile, forms a large clump of strap-like leaves. The best way to get rid of these creeps is with. Going to try a good liquid seaweed feed. Common Agapanthus Problems. The flowers are arranged in a globular structure, similar to allium, and are available in white, purple, periwinkle and pink. Is pot big enough,? In some countries, and even in the UK’s Isles of Scilly, it can “go wild” and become a nuisance. If you’re growing the … 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. I repotted it up a size when bringing it indoors. “This isn't life in the fast lane, it's life in the oncoming traffic.”. Typically reaching 60cm-1.8m (2-6ft), a few dwarf varieties such as ‘Lilliput’ with a height of 40cm (16in) are also available. Get rid of the fungus with a fungicide containing mancozeb or captab. Email Save Comment 15. 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. Or at least they come readily loose when you tug on them. Use a layer of sulfur spread on top of the soil to lower the pH. But then there are leaves that don’t come off so easily. Agapanthus, or "Lily of the Nile," is a perennial plant species prized for its use in the garden. Will give it a feed, no signs of flowers so far. We may get paid if you buy something or take an action after clicking one of these. Will Agapanthus Leaves Grow Back After A Harsh Trimming? sprayed on the leaves (both sides). Full disclosure: I get commissions from purchases made through links in this post. ! (beneficial nematodes). Agapanthus hail from the south African Cape, so they appreciate plenty of sunshine. vtandrea. If so, suspect Anthracnose, a catch-all phrase for a variety of fungal diseases. My agapanthus were full of blooms and transplanted into my garden in perth almost 2 months ago. Keep the soil around the agapanthus free of debris, apply a layer of fresh mulch around the plant and prune out the yellow foliage. The distinctive yellow and black striped caterpillars tend to bore into the roots for protection over winter. Follow. 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. Two years ago as I inherited them and they were reastablishing they were fed so that may have bulb,. 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