Spirea bushes require part sun or shade. Radical treatments to rejuvenate the bushes are also performed in the spring. Dig around to find the roots and cut them back. This species bears fruits with seeds in the ranges of 0.09 to 0.1 inches. Diseases and Insects of Shrubs and Small Trees. Spirea bushes with red fall foliage and dead flowers blossoms are ready for a prune. When you have filled the hole to the halfway point you can soak the soil. If the species is under ideal conditions, the stems can be as tall as 6.5 feet. Prune to make tight mounds. This technique works with astilbe, bigleaf hydrangea, hosta and Japanese spirea. Japanese spirea (Spiraea japonica), grown in U.S. Department of Agriculture plant hardiness zones 3 through 9, blooms on the year's new growth and must be pruned in late winter or early spring before new growth and buds begin. Spirea bushes are generally simple plants to grow as long as the growing conditions and care are ideal. The ones mentioned above are examples of this shrub that require pruning on or before the month of June ends. How do I prune a spirea bush? Examples of disturbed areas would be forest trails and edges, roadsides and fields. Encouraging a second flowering. They also prefer being in wet regions as well as areas where soils experience high levels of disturbance. If you don't want to cut the bush, use a pickup truck to pull it out. Note that the use of the chemical will be subject to the stipulations of the manufacturer. ALOT A friend told be to cut them down totally 6 to 8 inches from the ground. Spirea bushes do very well as a focal plant in the landscape or as part of a larger grouping for a screen or border. But in the United States, it adapts to the existing conditions. Cut back your spirea bush by trimming back your plant to remove any dead flowers and pruning them back to the topmost leaf on your spirea or the leaf tip. Using spirea on your property is best used as a focal point, in mass plantings and ornamental garden borders. The buds on the stems are minute with rounded to triangular shapes. Whether you have one in a container that you want to move to the garden, or you have an established plant that needs to move to a new spot, sometimes spirea bush transplanting is necessary. If they are pink, you could have the culprit. If you waited for you spirea to leaf out this spring and all your spirea left you with was a few spindly leaves and some dead branches, then read on as I explain how to get your spirea looking pretty again and how to keep it from reverting back to “Ugly Spirea”. The spring pruning should be a set of strategic cuts made to reduce the size of the plant. Spiraea japonica, though not a high-risk invasive plant, could invade your yard within a short period. Depending on the species and cultivar, spirea plants can grow anywhere from 1-8 feet tall. Your spirea may not need to be pruned each year. Their widths lie between one and one and a half inches. Removing any diseased or damaged branches and any dead growth. In this case, you can use this method. Removing suckers and prevent the plant spreading via suckering. 2. Spirea White, includes Bridal Wreath, Snow White, Snowmound, Fairy Queen and Thor Birchleaf. An excellent example of such a species would be the Virginia Spiraea. | Login, “We are very happy with our new paver patio, workmanship excellent.”--- Beverly, Benton, Copyright (c) 2020 Greenridge Landscaping. In most cases, you will find these species in use as ornamental shrubs. They are native to the temperate Northern Hemisphere, with the greatest diversity in eastern Asia. Q: I tried to plant a border of eurymus, but over the last 4 years the bushes have turned puny or died completely. Remove any rubbing branches or branches that point toward the center of the plant. That would not be a surprise as the Spiraea japonica is just but one out of more than eighty species in the United States. Spiraea, sometimes spelled spirea in common names, is a genus of about 80 to 100 species of shrubs in the family Rosaceae. Note that this species re-sprouts after cutting, and you will need to continue the mowing to exhaust its energy reserves. Another similar species would be the Spiraea Tomentosa. How can you tell that you are dealing with a Spiraea japonica invasion? Wipe the blades down with a cloth soaked in alcohol or bleach to sterilise them. But not big enough of a problem to be a high-risk plant. They are deciduous shrubs that can be divided into two categories: spring blooming and summer blooming. Choose a shoot on the outside edge of the plant. Here is a picture of my spirea after I pruned it: In the end, I ended up with a bush about half the size as the one I began with, but check out the picture below, taken only two weeks after it's very liberal haircut. If you don't have rope, cut flat across the top with your hedge shears. When you remove the rope, you will be left with a perfectly round spirea bush. If you are happy with the size and density of the shrub, skip a year. Most spirea are winter hardy to growing zones 3 to 9. They have hues ranging from brown to reddish-brown. One of the basic elements of caring for a spirea shrub is pruning it when necessary. Deadhead all remaining stems by cutting off the last 1 to 2 inches, using pruning shears to speed the process along. Bushes need one application of slow-release granular fertilizer in spring. Start by cutting the stems of the bushes at the ground level – if you cannot get to this level, cut as close to it as you can. Examples of some shrubs that fall in this category include lilac (Syringa spp. Spirea cuttings in summer are easily tolerated by the plant. Dig a hole that is twice as wide as the container and just as deep. Prune summer-blooming spirea varieties in early spring by snipping off the tips of the branches with shears just before growth begins. The Japanese Spiraea (Spiraea japonica L.), also known as the Japanese Meadowsweet, belongs to the rose (Rosaceae) family! To get a nice round shrub, a rope can be tightened around the plant and using your hedge shears, cut straight across the top. However, there is one common complaint about spireas that is hard to ignore. And where you have to use one, get a chemical that is suitable for use around such environments. Only use clean, sharp tools when pruning spiraea. And that is, that after a few years spireas start to look...well, ugly. Start by making a mix of the herbicide using the prescribed amounts before directing the spray on the leaves. Furthermore, trim off branches outside of the optimal time frame for spirea pruning if doing so benefits the plant's health. Subsequent monitoring should follow this elimination to ensure that seeds do not sprout in the now bare land. It owes to their low heights, compactness, and beautiful flowers. Invasive species adversely affect the environment. Regular, scheduled trimming promotes good health and new growth. I have 3 spirea bushes. Then, turn your hedge shears over (so that they are angled downward) and trim around the sides of the plant. And this could go on and on until the area fills with these plants. Remove the leaves from the section to be covered, and gently scrape away the outer bark in a few spots. Prune summer-blooming spirea bushes during the winter or in the spring. It belongs to the Rosaceae family and it is native to the Northern Hemisphere. are prized for their attractive cascades of flowers and relatively few maintenance requirements. How to properly trim spirea However, using this method is a sure way to keep seed production at bay and monitor the control of the bushes. Do not let time pass after this and immediately apply a herbicide mix of your choice. Bridal wreath spirea become covered with white blooms in early to mid spring. If you do not plan on using the land for other uses, you can use this method. The proportions should be in line with the manufacturer’s guidelines. ‘Sem’ Ash Leaf Spirea, Ural False Spirea, False Spirea ‘Sam’, Sorbaria sorbifolia ‘Sem’ – all these are names for the same shrub, native to Eastern Siberia, Manchuria, northern China, Korea and Japan. Categories Woody Shrubs/Ornamentals Tags Drought Tolerant, Rose Family (Rosaceae), Spirea. Frances Sperl, Denver, CO. Dear Frances, Vanhoutte spirea (Spiraea x vanhouttei) is a popular hybrid of two less well-known species, S. cantoniensis x S. trilobata.It blooms in late spring to early summer, with dense, flattish clusters of clean white flowers, borne on arching stems. How to Prune Spirea Bushes. As the team clears the area and moves the soil, it would pick up the seeds and move them to new locations. Performing spirea pruning is really not a difficult task, and there are several recommendations that it is good to know before beginning the task. For this reason, the Spiraea japonica is on the ‘do not plant’ list. Depending on the prevalent conditions, they can be as long as three to four and a half inches. Cut these stems down to ground level with the appropriate tool. Frequent light trimmings will benefit you and your plant more than less-frequent, more drastic prunes. Dig down around the stems to get as much of the root out as possible. The Best Time to Prune Spirea Most of the varieties of spirea can be pruned after their blossoms. Don't worry if you cut off a few good branches in the process. This species falls under this category. Spiraea. Understand why you should prune spirea. It won’t matter where you make the cuts, just remove as many flower heads as you can. Wash the blades of your tools in warm soap water, rinse thoroughly and dry. Their flowers are pinkish and can either be a deep pink or a pale one. Once a seed finds itself in the soil, it can remain there for years on end without losing its viability. But that is not the only affected area, as many more regions have suffered the cruel fate of its spread. Late pruning cuts off the shrub's new buds, resulting in little or no flowering during the midsummer blooming period. The roots and cut them back as I could 's stems to avoid damaging health... Branches even broke off easily in my hand at GardeningKnowHow.com I have 3 bushes! 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