For quicker results with fewer plants, try propagating gladiolus corms. Often planted as borders and along the back of a sunny garden, gladiolus (Gladiolus spp.) Exercise caution while digging near your gladiolus to avoid nicking, cutting or impaling the corm. For scaly bulbs like lilies, you can dig the bulbs in spring and remove the small scales that form around the outside. Pull the plant by its dried leaves and shake it gently to remove any loose dirt. grow in most U.S. Department of Agriculture hardiness zones but … To enjoy flowers all summer, plant your Glads every 2 weeks until early July. Pests and Problems. Generally speaking, gladiolus can be cured as you would onions and stored dry. Time to divide Gladiolus bulbs: April to June: Gladiolus flowering period: May to August: Gladiolus bulbs planting instructions Well-drained soil Gladiolus bulbs should be planted in fertile, well-drained soil. Grasp the stem and pull gently straight up and out of the ground. Spread bulbs out in a dry area that has plenty of air circulation, and allow bulbs … Any injury will increase the chance of rot while in storage. Storing Gladiolus Bulbs Dig the corms of gladiolus using a garden fork or spade, digging far enough away so that you don’t touch the corm. When you remove these cormlets and plant them separately, they’ll grow to flowering size in a couple of years. Crowded foliage and diminished flowering are signs that the bulb clumps need to be divided. Plant taller flowering bulbs behind low-growing plants or with groundcovers and perennials like hosta or daylilies. Check the original bulb for firmness. Store them over the winter and plant them in the spring. Bulbs will not multiply if they are dug up and stored for the next year, as gardeners often do with tulips. Plant in deep pots or in the border in sun Kannapolis, NC. After all the corms are transplanted, water the area sufficiently so as to maintain a well-drained soil. Species gladiolus Tall stems carrying downcast heads of green, cream and slate-purple over narrow, grey-green blade-shaped leaves Bulb size: Flowering Flowering: July-September Height: 36in (90cm) Position: Needs warm well-drained soil . To divide bulbs, carefully pull the small bulbs from the base of the plant. Shrubs. Kannapolis, NC. If any of the characteristics that identify true bulbs are missing, the plant isn’t a true bulb. The best time to transplant its bulbs is spring. Dig the corms up at the end of summer for storage. Cover up with soil, level the ground and then water, enough to soak the soil. Planting: Plant gladiolus corms in spring 2 weeks before your last expected frost date. The cormlets will grow into a plant, but won’t produce a flower this first year. Spread bulbs out in a dry area that has plenty of air circulation, and allow bulbs to cure. ... For tender plants like gladiolus, store the corms and cormels in a cool, dry place over winter and plant in spring. Divide deciduous species in spring. They don't enjoy competing with tree and shrub roots. Grow the plant outdoors in the pot for the first year, then dig up the corm and store it. Most gladiolus (Gladiolus spp. Digging Up Gladiola Corms: How To Store Gladiolus For The Winter, Best Holiday Herbs – Grow A Christmas Herb Garden, Madonna Lily Flower: How To Care For Madonna Lily Bulbs, Ice Suncatcher Ideas – Making Frozen Suncatcher Ornaments, Cold Hardy Citrus Trees: Citrus Trees That Are Cold Tolerant, Jasmine Pest Control: Learn About Common Pests Affecting Jasmine Plants, Repel Flies With Herbs: Information On Fly Repelling Herb Plants, Ponderosa Pine Plant Guide: Learn About Ponderosa Pines And Their Care, Fresh-Cut Pine Tree Smell: Perfect Christmas Tree Memories, Norfolk Island Pine - The Perfect Christmas Tree, Winter Survival Guide: Creative Ways To Garden In Winter, Evergreen Favorite: Container Grown Olive Trees. The newly divided gladiolus corms are now ready for replanting. Space the bulbs about 5 inches apart in rows. Generally speaking, gladiolus can be cured as you would onions and stored dry. Also, pull off the smaller corms growing on the outside of the old corm. However, in certain microclimates it is possible the bulbs may overwinter. 3 Break apart the corms by twisting them gently until they separate. Cut under the clump with the garden fork and push down on its handle. For the most natural look, plant bulbs in clumps or swaths, not straight lines. Its buds look black before opening. Create a circle around the tree, and dig until you reach your starting point. Some so-called bulbs, such as crocus and gladiolus, are in fact corms, which are just thickened hunks of stem. It is up to you if you want to experiment and leave some in the ground and store some. 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