To avoid infestation and infection be sure to: Treat both by picking off and disposing of affected material in the trash and applying a fungicide.ĭamping off, as discussed in the growing section, is a fungal disease that can hit oversaturated sprouts and cause them to literally keel over and die. Discard affected leaves in the trash and apply a fungicide.īotrytis blight and powdery mildew are fungal diseases that damage foliage by infecting them with grayish, fuzzy mold. Unchecked, entire leaves curl and brown before dying and dropping. If you can’t get rid of them with a firm spray from the garden hose, an application of organic neem oil should do the trick.Īs for disease, the following conditions may present themselves when conditions are less than ideal:Īlternaria leaf spot causes dead brown patches ringed in yellow on mature leaves. However, there are several sap-sucking insects that not only destroy foliage with their voracious eating habits, they can also be carriers of disease.
Those who may direct sow have no frost worries in Zones 9 to 11. To cultivate this plant in your garden, wait until the last average frost date for spring has passed before transplanting seedlings. Transplant the individual cells directly into the garden or deep containers after the danger of frost has passed.įor perennial growing, you can also direct sow seeds in the garden, but they may not mature and bloom until the second year. Thin the seedlings to one per cell when they have one to two sets of true leaves.Īfter the danger of frost has passed, acclimate the seedlings to the outdoors by setting them outside for a few hours each day for three to five days prior to planting them out. The seeds are tiny, so do your best to sprinkle only about four of them into each cell.Ĭover them lightly with one-eighth of an inch of potting medium. Use biodegradable seed starter cells or cardboard egg cartons that can be separated for planting. This species has a deep taproot that should be disturbed as little as possible.įor both perennial and annual cultivation, soak seeds overnight and start seeds indoors eight weeks before the last average spring frost date to get a jump on the growing season. In this article you’ll find all you need to know to grow and care for globe amaranth in your garden. Thanks to the magic of hybridization, flowers are available in an array of vivid shades, including lilac, magenta, pink, purple, red, orange, and white. Self-sowing may produce additional plants, although seeds have a low germination rate. In Zones 9 to 11 it can grow as an annual and be removed at season’s end, or it may be left in the ground to return as a short-lived perennial. globosa is a tender annual in USDA Hardiness Zones 2 through 8, where it blooms continuously from summer through to the first frost.
Each bract contains a tiny white or yellow flower that is visible at close range. They are stiff and papery like those of strawflowers. The bright flower heads resemble clover, with tubular bracts instead of petals. Related plants include love lies bleeding amaranth, cockscomb, and spinach. It’s native to Central and northern South America, where its classic magenta blossoms dot the landscape. Globe amaranth, Gomphrena globosa, is one of 90 Gomphrena species of flowering plants in the Amaranthaceae family. If you buy from one of our links, we may earn a commission. We link to vendors to help you find relevant products.
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