![]() If water levels are high in the rivers or streams into which water must drain, water from a flash flood may remain for long periods after the rain event.Īreal floods occur after more gradual and prolonged rain events. Although the water rise is fast, the water drop is not always fast. ![]() dam breaks, but thunderstorms that produce heavy rain in a short period of time are the main culprits for agriculture. Rivers may stay above flood stage for multiple days or weeks.Īs the name flash flood indicates, water level rises quickly in a flash flood, within 6 hours or often sooner after heavy rain. Precipitation amounts and river drainage characteristics can be modeled, so predictions are reasonably accurate. River floods can usually be predicted several days ahead of the event. The rise in the river can be slow and can involve precipitation far upstream from the flood gauge. River flood relates to a specific place on a river or large stream where a flood gauge is monitored. The National Weather Service uses the terms river flood, flash flood and areal flood. But understanding the various types of floods may help those of us not directly impacted understand future warnings and severity of the effects on agriculture. And, each flood event has characteristics that vary across the landscape. To the victims of flooding, definitions of their flood aren't important. Rain events of over four inches have been common and frequent. Recently, amazingly heavy precipitation has occurred. Then, rain in large areas of the state stopped and was replaced by hot, dry weather. Some corn acres were replanted in areas of the state with poorly drained soils or had experienced heavy rainfalls. Many soybean acres were planted well after the optimum date for yield. Spring rains delayed corn and, especially, soybean planting in much of Missouri. Our state is diverse in crops grown and the weather they experience, but general statements can be made. Most perennials are tougher than you think.Mother Nature has not been kind to Missouri Agriculture in 2021. Try to do it in early spring, but don’t panic if you have to divide them later in the season. ![]() If they get too big for the space, have a lackluster bloom, or stop flowering in the center of the clump, dig a chunk off the edge and replant elsewhere in your garden. Some perennials need to be divided every three to five years. At the end of the season, clean up leaf debris to make sure diseases and pests don’t overwinter. They seem to poke along the first year and then grow a little more convincingly the second, finally taking off during the third growing season. “Crawl, walk, run” often is the phrase you’ll hear about perennials. Most perennials are not going to “wow” you the first season. While some plants tolerate less-than-ideal conditions, it doesn’t make sense to set your plants up for failure. Full shade is about three to four hours a day. Part shade means roughly three to six hours of sun. In general, full sun is considered six to eight hours per day. Read the plant label before deciding where you’re putting your new plants. Too much fertilizer can cause weak growth that’s susceptible to pests and diseases. Follow the label, and don’t go overboard. (Here's how to calculate how much mulch you need.) Feed your plants with a slow-release general purpose fertilizer. Use mulch to preserve moisture and keep down weeds, which compete for water and nutrients. Water all plants deeply right after planting, especially during dry spells. ![]() Give them some help getting established.Having a variety of plants also provides habitat for many different pollinators and other garden visitors. Perennials cut down on the work of planting (and some provide great ground cover) while annuals adds long-lasting beauty and longer bloom times. In a garden just as in life, there is value to having variety. ![]() And just to make life interesting, some plants take two seasons to flower they’re called biennials. To further complicate things, some annuals become perennials in warmer climates, when the lack of a hard frost allows them to keep growing. Perennials also tend to do best when planted in the fall or spring, no later than six weeks before the ground freezes (about mid-November for most of the country). Perennials tend to have less flashy flowers and bloom for a shorter period of time, usually just two to six weeks. While this makes planting easier, there are some drawbacks. While the top portion of a perennial dies back in winter, new growth appears the following spring from the same root system. Conversely, perennials come back for many seasons. ![]()
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