Will get rid of the plants, aiming for something a bit more straight and square, some sort of hedge potentially. Are there any pest or disease problems? Deep blue agapanthus growing in a gravel bed at Trenarth Gardens, Cornwall . Agapanthus should be grown in a light, fast-draining soil, enriched with leaf mould and composted manure. These include: improper soil mixture, potting, fertilising and placement in the garden. Growing Agapanthus In A Pot - How to grow agapanthus in a pot Q. Agapanthus - (1). Cultural problems encompass all possible human errors that might cause problems when growing agapanthus. “It’s a vigorous and heavily flowering form, creating a roll of deep-blue thunder on sturdy stems to 3.5 feet,” explains Hinkley. Agapanthus have few problems. I am just wondering whether the Agapanthus you are talking about is also perhaps a hybrid variety. ... Wombat ,I have an agapanthus problem of a different kind. Agapanthus look great when planted with drifts of ornamental grasses, sun-loving rudbeckias and goldenrod (Solidago). 8. When I cull my agapanthus do I keep the biggest ones that presumably have already flowered ... Q. Agapanthus - When to put out or start watering over wintered agapanthus in a greenhouse? Q. Agapanthus - My agapanthus is 4 years old and has out grown the flower bed. I have never encountered this problem myself, but I know why it happens. Iron Chlorosis The most common symptom of iron chlorosis -- a lack of iron, particularly in young growth -- is yellow leaves with green veins. Agapanthus are known for their large, blue drumstick-headed flowers in summer. Q. Agapanthus. Culture Problems. Hate the flower boxes and will get rid of them. Agapanthus has strappy, green leaves add texture to beds, borders, and containers, too. Sometimes it's because the flower bud has been frosted over winter, but the other reason is that agapanthus need a high-potash feed every two to three weeks from mid-March to mid-September. Tall stalks hold large clusters of purplish-blue or white flowers in summer and early fall. THough not with all the Agapanthus. The leaves are dying off and is also mushy. If the plants aren't fed, or are given a high-nitrogen feed, they won't flower.' With proper care, agapanthus flowering occurs repeatedly for several weeks throughout the season, then this perennial powerhouse returns to put on another show the next year. Common name: African lily. My problem is with the double diamond variety. I have the same problem at the moment. These South African perennial plants are equally suitable for borders and large containers. Agapanthus can be used as a border plant, in a mixed bed of perennials or in a container. 'This is a common question. Agapanthus ‘Storm Cloud’. A landscape staple in warm-winter regions, agapanthus is a low-maintenance perennial that produces colorful clusters of blue or white trumpet-shape flowers in summer and fall. Zones: 7-10 ‘Storm Cloud’ is the darkest of the robust, semi-evergreen species. And it can get up to 45 degrees celsius in summer. These wonderful plants are blooming machines, which you can think of as essentially the tropical equivalent of the daylily. All too frequently these South African beauties, also known as lilies of the Nile, stubbornly fail to flower. Agapanthus, commonly called Lily of the Nile, forms a large clump of strap-like leaves. Agapanthus is a nearly indestructible plant and, in fact, most agapanthus varieties self-seed generously and may even become somewhat weedy. Whether grown in a container or in the ground, Agapanthus should be divided every 4 years or so—deciduous types in March, just before they start growing, and evergreen types immediately after flowering. 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