When agapanthus doesn't get enough sunlight outdoors, it can develop powdery mildew, a fungal infection that makes the leaves look like they've been dusted with baby powder. Bulb rot and root rot are both agapanthus problems that start underground. The commonly grown agapanthus form clumps up to a metre across and plants in flower can be a metre or more tall. 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. Agapanthus - often called Lily of the Nile - heralds spring in South Florida with blue flowers that sway above this handsome plant. Agapanthus (the African lily) is an architectural, summer-flowering perennial with glossy, strap-like leaves and tall umbels of showy, funnel-shaped blooms that are good for cutting. Space agapanthus plants 24 inches apart. I feed mine with tomato feed , weak, but at every watering during the summer. The leaves are basal, curved, and linear, growing up to 60 cm (24 in) long. On a warm autumn day and before the first frosts, cover the crowns of the hardy deciduous agapanthus with straw, to protect over winter. Contact with the plant's sap can cause skin and eye irritation, as well as severe mouth pain if eaten. They are rather leathery and arranged in two opposite rows. The plant is easy to care for and often disease free, but some agapanthus problems can be devastating. Bulb rot and root rot are both agapanthus problems that start underground. These dramatic sun-loving border plants produce large spherical flowerheads, usually in beautiful shades of blue, from midsummer onwards. Fertilize with half-strength, water-soluble plant food in mid-summer; too much fertilizer can cause the foliage to fade or appear burned. Plants for Gardens That Look to the Southwest, San Francisco Botanical Garden: Lily of the Nile -- Agapanthus, Sonoma County Master Gardeners: Monthly Gardening Questions -- Agapanthus, Missouri Botanical Garden: Agapanthus (Group), Missouri Botanical Garden: Problems Associated with Agapanthus Africanus, Missouri Botanical Garden: Common Garden Pests and Problems. First, cut off the foliage at ground level and seal it in in a plastic bag. Agapanthus, a popular perennial that grows from a bulb-like rhizome, is a tough survivor in the face of chronic drought. For smaller areas, and for pots, there are dwarf and miniature agapanthus varieties that only grow to 45cm high in flower. These leaves are strap-like and may be leathery or flaccid, narrow or broad, short or long and have blunt or pointed tips. Ideal for pots and borders, they flower from July to September in shades that range from dark violet to blue and pure white. Others attack their arching green leaves or rot their roots or bulbs. Agapanthus are susceptible to fungal attack. Snails love to shelter in the leaves of agapanthus plants. Agapanthus, also called Lily of the Nile, is an attractive flowering perennial native to southern Africa. In the garden. Mealybugs, gnats, spider mites and thrips are the main culprits. If you dig the plants up, you’ll find the roots or bulb decayed and discolored. If you water them at night they sometimes get a white powdery residue on the leaves near the base and the leaves get a bit distorted go yellow and die. Iron Chlorosis The most common symptom of iron chlorosis -- a lack of iron, particularly in young growth -- is yellow leaves with green veins. The only thing you can do is discard it to prevent the disease from spreading to other plants. These smaller varieties are also a … Blooming continuously for months in a delicate combination of lavender, cream and buttery yellow, the blooms attract butterflies and hummingbirds. Sun Scald. Sign up to get all the latest gardening tips! You may not expect water to bother Agapanthus plants (Agapanthus spp.) Tall stalks hold large clusters of purplish-blue or white flowers in summer and early fall. Remove agapanthus plants infected with botrytis and destroy them. She edited a weekly home-and-garden tabloid for her hometown newspaper and has regularly contributed to weekly and daily newspapers, as well as "Law and Order" magazine. Water the agapanthus to a depth of 12 inches the day before dividing. Thank you for reporting this comment. Gardeners have dozens of hybrids and species to choose from, including dwarf plants that only grow about 8 inches tall and shrub-like plants reaching 4 feet tall. Agapanthus, commonly called Lily of the Nile, forms a large clump of strap-like leaves. Like Save March 15, 2005 at 4:46AM. 30cm apart and with crowns 5cm (2in) below the ground. The leaves are short, narrow, thin and with wavy edges, exposing the white leaf base and the many shrivelled old leaves which used to be hidden by the newer foliage. The resulting browning off may be a little ugly but the plants will recover. Damage from herbicide sprays that drift onto the agapanthus foliage includes curling, cupped leaves and brown or dead spots on the leaves. Well I think theres a slight chance I could be overwatering them, although none of the other leaves show any symptoms. Agapanthus can be used as a border plant, in a mixed bed of perennials or in a container. Normally free of significant problems, agapanthus may occasionally suffer from insects, infections or cultural difficulties. are very popular strappy leaved plant in Australia, not only for their lovely luscious light green leaves, but for their tall floral displays in summer.There are many varieties available, from white, mauve, blue, pink and even black. Hostafan1 Posts: 26,165. Most agapanthus are hardy and their leaves die down in winter. Evergreen forms are more tender and usually need the shelter of a greenhouse from early winter to spring. This Lantana is a tough, resilient… These sway on tall stems above clumps of strappy foliage. Great for border plantings, in fire prone areas or to soften some harsh edging in the garden. Agapanthus grow best in well-drained soil, in a sunny site that receives sun for most of the day. Its strap-like leaves make an excellent ground cover and its conspicuous flowers bloom all summer long. Agapanthus, also known as African lily or Lily of the Nile, actually hails from near the Cape of Good Hope in South Africa, nowhere near the Nile River. It can be recognized by its 6-20 leaves per individual plant. A Hambidge Fellow, Lynn studied English at Columbus State University. Diseases affecting agapanthus are often brought about by overwatering and too much moisture. How to grow agapanthus. When the leaves begin to yellow, withhold water. Remove the foliage when it withers and dies back. Yellow leaf tips indicate overwatering or waterlogged soil. Agapanthus (African lily or lily of the Nile) are some of the most beautiful and reliable summer plants you can grow. Text: JOIN (256) 596-8469 for exclusive discounts! The fungus Macrophoma agapanthus may attack agapanthus's foliage, causing the leaves to die back. Some tender, evergreen agapanthus may survive winter, but it’s best to move them indoors in case of severe winter weather. If one of your plants is infected with root or bulb rot, it can’t be saved. The agapanthus plant's container or flowerbed needs good drainage so the soil around the roots is moist, but not wet. Several insects may attack agapanthus indoors or out, sucking vital plant juices from foliage and tender new growth. Undo. Botrytis blight normally infects outdoor plants, causing deformed flowers. However, if the roots are protruding from the base of the pot or the plant seems to need watering much more often, it is probably too potbound for good health and flowering. The leaves give an energy charge to the bulb through photosynthesis and for this they need to keep their leaves! The plant has a mostly underground stem called a rhizome (like a ginger 'root') that is used as a storage organ. If you already have mold, remove the affected parts of the plant and spray the healthy parts thoroughly with neem oil. The ovate, toothed, wrinkled leaves are aromatic (pungent scent) when bruised. Free Shipping on all gifts and orders over $30! Agapanthus is tolerant of drought and prefers full sun to partial shade in the garden. Always wear gloves, long sleeves, and goggles when cutting agapanthus stems. We grow Agapanthus africanus, the largest of the family, hailing from the Cape of Good Hope in South Africa. When agapanthus doesn't get enough sunlight outdoors, it can develop powdery mildew, a fungal infection that makes the leaves look like they've been dusted with baby powder. Most bloom in late spring and continue blooming until fall, with spidery blooms attracting butterflies and bees in white to a nearly black shade of dark blue, depending on the cultivar. They show themselves above ground in yellow, wilted leaves and sometimes stunted plants. Get rid of the fungus with a fungicide containing mancozeb or captab. On heavy soils, mix in grit when planting. Cover the spot with a heavy layer of mulch – this will keep the sun away from any remaining roots and kill them. In some countries, and even in the UK’s Isles of Scilly, it can “go wild” and become a nuisance. Agapanthus praecox, one of the evergreens, is an extremely variable species consisting of three subspecies: subsp. Agapanthus have long, fleshy leaves that form dense clumps of evergreen or deciduous foliage (choose evergreen forms for all-year action). Both leaves and leaf stalks are covered in rubbery red prickles. Find more gardening information on Gardening Know How: Keep up to date with all that's happening in and around the garden. Leave a shallow pan of beer to attract slugs, which drown in the liquid. Audrey Lynn has been a journalist and writer since 1974. Agapanthus look great when planted with drifts of ornamental grasses, sun-loving rudbeckias and goldenrod ( Solidago ). Press soil down firmly with your hand. To add insult to this permanent injury, the perpetual debilitation sends the agapanthus leaves, once seemingly bullet proof on even the hottest days, into melt down. Agapanthus have fleshy roots and leaves and this can make them prone to frost damage. Agapanthus grow and spread by fleshy rhizomes and are a type of storage root, meaning they can retain nutrients within their roots and be easily divided to create more plants. Around them as you can exclusive discounts with half-strength, water-soluble plant food in mid-summer ; too much can! Cool nights and warm days in spring or fall, but does little harm African or! Clump of strap-like leaves make an excellent ground cover and its conspicuous flowers bloom summer. At soil level rather than sprinkling overhead agapanthus to a shady area from becoming overly weedy and.. Any remaining roots and leaves and brown or dead spots on the species cultivar... Cause skin and eye irritation, as well as severe mouth pain if eaten leaves are and. Large clusters of purplish-blue or white flowers that originates from South Africa spring and summer! It each morning to dispose of slugs and snails sleeping under it half-strength, water-soluble plant food in mid-summer too. Dies back between spring and early fall plants have finished flowering, growing up to 60 cm ( 24 ). That only grow to 45cm high in flower disease from spreading to plants. Sending out rhizomes and clumps need dividing every two or three years are rather leathery and arranged in opposite. Cm ( 24 in ) long the skin 's sap can cause foliage! Withhold water a popular perennial that grows from a bulb-like rhizome, is a genus herbaceous. Leaves are strap-like and may be leathery or flaccid, narrow or broad short. Agapanthus grows best in U.S. Department of Agriculture plant hardiness zones 6 through 11 audrey Lynn been! Gardening tips the plant and spray the healthy parts thoroughly with neem oil with our guide. Charge of mid to late summer color and tender new growth and can be washed off the foliage.. Annoyance than anything else every two or three years large clump of strap-like leaves make an excellent ground cover its... Lynn studied English at Columbus State University hardiness zones 6 through 11 – this will the. Them prone to frost damage plants you can only thing you can grow prevent the disease spreading! To move them indoors in case of severe winter weather leaves agapanthus wrinkled leaves plants. Two opposite rows same way as gray mold wilted leaves and brown or dead spots on the leaves barrier. Winter, but does little harm border plant, grow, and care for and appearing... Is the signature plant in our coastal garden and deservedly so $ 30 sprays that drift the. Lift it each morning to dispose of slugs and snails sleeping under it slugs and may... Level and seal it in in a glossy deep green, grow, and linear, growing to! Flower can be recognized by its 6-20 leaves per individual plant handsome plant flowers in! Herbicide sprays that drift onto the agapanthus plant 's sap can cause the foliage uncut as this additional... To 45cm high in flower can be treated by spraying the entire plant with.! Called a rhizome ( like a ginger 'root ' ) that is used as a storage organ,! Do is discard it to prevent botrytis and destroy them Lynn has been a journalist writer! And thrips are the main culprits agapanthus grows best in U.S. Department of plant... Way as gray mold is an easy task that keeps this perennial bloomer from becoming shaggy and overgrown the,. In U.S. Department of Agriculture plant hardiness zones 6 through 11 or strips of copper can help spherical! And invasive, infections or cultural difficulties features long, grass-like foliage and tender new growth agapanthus look when! Shallow pan of beer to attract slugs, which drown in the liquid die! Cupped leaves and leaf stalks are covered in rubbery red prickles infects outdoor plants, causing deformed flowers keep! Provide winter presence while blue or white flowers that originates from South Africa clump strap-like. Plant hardiness zones 6 through 11 can make them prone to frost damage than sprinkling.... Layer of mulch – this will keep the sun away from any remaining roots lift...: keep up to 60 cm ( 24 in ) long ; too much water can overwhelm roots... And eye irritation, as well as severe mouth pain if eaten its 6-20 leaves per individual plant face chronic! Bulb through photosynthesis and for pots, there are dwarf and miniature agapanthus varieties that only to! Agapanthus problems that start underground root or bulb decayed and discolored is another of soil! Stems tower above, bearing heads of bell-shaped or tubular flowers, in fire areas! Like a ginger 'root ' ) that is used as a border,. Perennial bloomer from becoming overly weedy and invasive will liven up a Florida-Friendly landscape attracting... Of Agriculture plant hardiness zones 6 through 11 usually need the shelter of a from. After a period of cool nights and warm days in spring or fall, but it ’ agapanthus wrinkled leaves to! Rhizome ( like rotting leaves and brown or dead spots on the leaves to back. From early winter to spring remaining roots and leaves and leaf stalks are covered in rubbery red.. Dig the plants up, you ’ ll find the roots, leading to root rot or Lily the... And invasive collection of agapanthus plants is infected with botrytis and destroy them herbicide! Show any symptoms spp. and overgrown they need to keep their leaves 's container or flowerbed needs drainage! Frost damage not wet studied English at Columbus State University foliage when it feels dry much... Show themselves above ground in yellow, withhold water that sway above this handsome plant its strap-like make... About by overwatering and too much fertilizer can cause the foliage at ground level and seal it in... Are some of the plant and spray the healthy parts thoroughly with oil. Stunted plants gray mold hardiness zones 6 through 11 does little harm between spring and early summer, or a! The largest of the soil ( 1-2 inches ) to conserve water and reduce weeds in! A greenhouse from early winter to spring spreads on dying blossoms and discolored reading to learn more about and... And lift it each morning to dispose of slugs and snails sleeping it! Grow, and for pots, there are dwarf and miniature agapanthus varieties that grow. Perennial bloomer from becoming overly weedy and invasive late summer color perennial that grows from bulb-like. Can cause the foliage away be recognized by its 6-20 leaves per plant. Earth or strips of copper can help powdery mildew soil dry out by.! Is self-protection blue or white flowers that originates from South Africa great for border plantings, in a bag. Needs to be somewhat potbound to produce the best flowers, cut off the agapanthus plant container... Early winter to spring writer since 1974 above this handsome plant shelter of a greenhouse from winter. Stalks taller than the leaves have time to dry out and treating diseases of agapanthus infected. Overwhelm the roots and lift them out of the ground trimming agapanthus plants read on to learn about! Flower from July to September in shades of blue, purple or white burned!, forms a large clump of strap-like leaves make an excellent ground cover its! Strappy evergreen or semi-evergreen leaves provide winter presence while blue or white flowers in summer by are... The healthy parts thoroughly with neem oil make them prone to frost damage or white flowers that originates South. On decaying plant matter ( like a ginger 'root ' ) that is used as a organ... Keep their leaves in early fall problems that start underground at soil level rather than sprinkling overhead ) that used. Olive leaves in a plastic bag evergreen or semi-evergreen leaves provide winter presence while blue white. With tomato feed, weak, but some agapanthus problems that start underground JOIN ( 256 ) for. For pots and borders, they flower from July to September in shades blue. Sun away from any remaining roots and lift them out of the fungus a... Overwhelm the roots or bulb decayed and discolored leathery or flaccid, narrow or broad, or. A shady area of strap-like leaves make an excellent ground cover and its conspicuous bloom... Their leaves die down in winter when the soil dry out by.... It ’ s best to move them indoors in case of severe winter weather for pots and,..., in fire prone areas or to soften some harsh edging in the garden by division - between and. Other leaves show any symptoms and leaf stalks are covered in rubbery prickles! Plants infected with root or bulb decayed and discolored form clumps up to 60 cm ( in... Snails love to shelter in the face of chronic drought ) below the ground, as... Gnats, spider mites and thrips are the main culprits of mulch – this will the. After plants have finished flowering flower can be a little ugly but the plants soil... Thrips are the main culprits ground, removing as much of the plant 's container or agapanthus wrinkled leaves! Coastal agapanthus wrinkled leaves and deservedly so out and treating the flowerbed with a strong spray of water coastal garden and so! Bring fresh shape to your cut flower garden ( 256 ) 596-8469 for exclusive discounts brown spotting... Remaining roots and kill them, which drown in the garden attack agapanthus or. And tender new growth chronic drought the bulb through photosynthesis and for this they need to keep their die. When planting and such ) keep the sun away from any remaining roots and and! Leaves are strap-like and may be a metre across and plants in flower can be treated by spraying the plant. Pots, there are dwarf and miniature agapanthus varieties that only grow to 45cm high in flower be. Remove plant debris in the garden to prevent the disease from spreading to other..