For purposes of planning your irrigation system, I have found that in most situations flood bubblers will water an area about 3 feet in radius, at a flow of 2 GPM. St. Augustine grass is a great choice for high traffic lawns. I'm redoing my St. Augustine grass backyard and the existing sprinkler heads are rainbird fixed heads. Remember that cost is consistent regardless of spacing so it will not save you money. <<< Previous Page ||| Tutorial Index ||| Next Page >>> The vast majority of spray type heads and rotary nozzles/rotators are designed to operate most efficiently at 30 PSI. (As of 2013.). So the reviews are mostly my personal opinions. Remove no more than one-third of the leaf area with any one mowing. (Yep, over-size ego alert, the rule is named after me. You would be in big trouble if the pressure lost in pipes and valves resulted in the pressure at the sprinkler only being 20 PSI. Just don’t forget to use your “back” button to return here! 5 Best Stick Edger 13 Best Trimmer Lines | Multi-Sided, Round, Square, Twisted & Serrated. I tested the sprinklers and I noticed that the grass has grown over the sprinkler heads and is blocking the pop-up mechanism from spraying the grass. At the grocery store it’s “paper or plastic?” but with sprinklers the question becomes “metal or plastic?”. See the previous pages of the Sprinkler System Design Tutorial if you don’t know what static water pressure or design pressure means. The first is that each type must be separated and connected to a separate control valve. At pressures above 45 PSI most spray heads start to create lots of mist, which results in poor sprinkler performance. It is best not to bag grass clippings. The good new is you did choose the right fertilizer, the not so good news is most likely you have overused Scotts Bonus-S as you suspected. Bitterblue grass is a finer, denser St. Augustine grass. Fortunately, most of today’s plastic sprinkler heads are very well engineered and will perform as well as, if not better than, the old metal sprinklers. It will help you choose the best sprinkler for your situation. The research tends to indicate that a really well-machined brass nozzle has better water distribution. There are many different schools of thought on this, but my general recommendation is to split the difference. Not trying to step on your toes but if you water St Augustine grass 3 times a week or even twice right now, you'll have brown patch fungus bad. How to Trim Grass From Sprinkler Heads. When using rotors or rotary nozzles there is less pipe and trenches, but the rotors themselves cost more. The intent of a drip emitter is that the water would soak into the ground at the emitter location with a minimum amount of water puddling around the emitter. I came up with this rule many, many years ago. Finally the drop goes into one of the sprinkler heads and is propelled out onto the lawn. However new technologies are blurring the traditional boundaries between the types. The first brand on the market was called the “MP Rotator”, and several other similar products quickly became available from other companies. 13 Best Inexpensive Lawn Mowers For Small Yards The primary reason for this change in materials is cost; machined metal parts are enormously expensive in comparison to injection molded plastic. They often cut corners like using poor quality raw materials, reducing the amount of plastic in the body and using low quality molds. Some sprinkler manufacturers make “bubbler nozzles” that fit onto their standard spray-type shrub style or pop-up sprinkler bodies. Thanks for visiting, I hope some of these lawn care tips may be of use on your own home lawns. I don't like them because they never seem to water the area closest to the head. I recently put in some St. Augustine grass here in Central Florida. For new St. Augustine grass, the time of year will determine how long you need to water. For spray type sprinklers, rotary nozzles, and rotators most designers use an operating pressure of 30 PSI, unless a lack of available pressure forces a lower level. In this example put them 22′ apart. Remember– the pressure you enter in your table is the pressure for a single sprinkler head. The low pressure sprinklers (or emitters) are installed so that a separate valve turns them on and off, and a special pressure reducing valve is used. If the area is wider than 3′ I will install a second row of bubblers. Best Lawn Edging for a Legendary Garden 5 Best Gas Hedge Trimmers 4 Best Walk Behind Brush Cutter 3 Best Yard Hydrant. Operating pressure is simply the pressure that needs to be present at the sprinkler or emitter inlet for it to perform as intended. Most bubblers are designed so that the water gently “bubbles” out of them, the reason being to avoid erosion caused by a strong stream of water. These are much more heat and drought tolerant than the northern grasses mentioned above. St. Augustine grass (Stenotaphrum secundatum) is a common warm-season grass that grows in U.S. Department of Agriculture plant hardiness zones 8 through 10. They need between 20 and 30 PSI of water pressure to operate properly. At any rate, even if you still don’t understand why you use the pressure loss for only a single sprinkler, please trust me, it’s correct! *New models are being introduced each year as the technology advances and I expect to see shorter radius rotators available. 15 seconds to fill is 4 GPM, 22 seconds is 3 GPM, 30 seconds is 2 GPM, 60 seconds is 1 GPM, etc. St. Augustine grass is one of the most popular grasses used for lawns in South Florida. A trick you can use is to go to the store and purchase a flood bubbler to use as a test. In practice if I am watering a long planter strip 3′ wide with shrubs in it I will install flood bubblers 3′ to 4′ apart down the length of the planter. 16 liters rounds to 4 gallons, while 4 gallons rounds to 15 liters. So it only passes through one sprinkler head. As the pressure is reduced the water doesn’t throw as far, it’s exactly the same as shown on that performance chart, a lower pressure gives less radius.) But you can create two different valve zones and use different sprinklers in each. They all use multiple streams of water that rotate around the nozzle and look like rotating spider legs. Most of my commercial clients ask me to use at least a 6″ height, even for lawns. You may already see the less attractive common bermuda growing in lawns around your area. More properly called “fixed spray heads” these are the small heads that spray a fan-shaped pattern of water. For groundcover and shrubs use 6″ and 12″ heads. It is considered one of the best pop up sprinkler heads. Rain Bird 1804VAN - 4" Professional Pop-up Sprinkler, 3. In actual practice my experience is that they don’t do a good job of actually flooding a large area. For these turfgrass areas, you will have to rely on the use of a pre-emergent herbicide. For example, if you have a 30′ radius rotor next to a 15′ radius spray head, how far apart should they be from each other? Q. Knowing how to choose the right model can end your irrigation woes and make the process not only easy but also fun. However, a small number of bubblers with adjustable flows can usually be installed on the same valve zone with spray-type sprinklers that are watering adjacent shrubs or groundcovers. A full circle stream bubbler typically has 6 streams of water allowing it to water 6 small plants, like daylilies, that are grouped around it. They are designed using liters, so in reality it is a 16 l/h emitter, not a 4 gph emitter. Read the warning below! Set the mowing height at 2 1/2 to 3 inches (3 to 3 1/2 inches in shady lawns). Has width control features for zooming in and out to fit your preferred coverage area of up to 4200 sq. ft. Water flow control for overwatering with clog resistant rubber nozzles even when at maximum pressure, Optimal pressure of up to 100 (psi) for watering large gardens faster, Saves water with its easy to control tabs which sprinkle water on the required area, Control tabs require careful handling to avoid damaging them, Putting excessive pressure may stop the oscillation, Exposed surface diameter 2 ¼” and 6” body height for efficiency, Each head has an adjustable nozzle installed in it for easy water pressure control, Fully adjustable 1804 nozzles for adjusting water throw area, Requires you to double check if its compatible with your system since it has no return policy, Does not come with spare nozzles which require careful handling, ¾” inlet for optimal water supply to the system and maintaining pressure and preventing water turbulence, Has a full circle rotor which throws water evenly minimizing any chances of underwatering or overwatering, Has a 4-inch popup head which prevents nozzle blockage when watering lawns, Comes with 3GPM pre-installed nozzles which helps save installation time, Delivers a throw radius of between 25 to 50 ft, Has 5000 rotor heads which deliver great performance for an easy and smooth sprinkling experience, Adjustment screw heads may be challenging to adjust, Comes with pre-installed nozzles saving assembly time, Adjustable rotor heads which give full flexibility, Each pack comes with an adjustment tool for easy operation, Adjustable spray nozzles between 20 to 40 ft to suit your preferred coverage area, Compatible with other popular brand gear drive rotors, Has a 4-inch pop-up height which helps prevent nozzle blockage, You may encounter challenges when installing, 2. We always get asked about proper watering and how residents can maintain or improve their current St. Augustine turf. wise guy, yes I have seen water sucked back into a sprinkler head. The lower the mowing height, the more frequently you will need to mow. Bubblers are generally used to flood small areas of the landscape with water. For more on micro-bubblers see the drip irrigation guidelines tutorial, where they are called adjustable flow emitters. Pop-up sprinklers often don’t cost any more than shrub sprinklers when you include the cost of the riser (the upright pipe the sprinkler is mounted on). Note that our droplet only passes through one sprinkler head on the way to the lawn. At this point in the design process what you need to know is an approximate sprinkler operating pressure. In-ground sprinklers: These can deliver water in the most efficient pattern. OK, enough fun for the geeks.). Irrigation Tutorials Home    Unfortunately it almost always is very expensive to fix at that point, costing them far more than it would have if they had taken the time to learn how to do it right the first time. Also the value you enter should be the highest sprinkler head pressure requirement. St. Augustine grass (Stenotaphrum secundatum) is a warm weather, subtropical grass which can be found throughout the United States, Canada, Mexico, South America, western and southern Africa, the Caribbean, the Hawaiian Islands, and Oceania. The best soil for St. Augustine grass is one that is well-drained (like sandy soil) with pH ranges from 5.0 to 8.5. These specifications typically have a table that lists the operating pressure, the flow the sprinkler will use, and how far the water will spray at that pressure. Use of these pressure regulators gives more accurate pressures than adjusting a nozzle or throttling a valve, thus they increase the sprinkler system’s efficiency. Covering many different lawn care topics relating to most aspects of lawn care practices for St Augustine grass lawns. Wait until the grass is dry to trim it. 5 Best Stick Edger 13 Best Trimmer Lines | Multi-Sided, Round, Square, Twisted & Serrated. So study the spray pattern of the streams and examine whether the streams will reach the plants you want to water. Repeat this around the circle. The Rain Bird company makes many different types of sprinkler heads, including impact rotors. So if you plan to use a spray head that will need 20 PSI and also a rotor that will need 35 PSI, you will enter the higher value– which in this case would be 35 PSI. Pop-up style sprinklers are available in a variety of heights, generally 2″, 3″ , 4″ 6″ and 12″ are the common heights. I personally haven’t noticed any significant difference in performance between most brass and plastic nozzles in well-designed, sprinkler systems, although brass nozzles will no doubt last longer. Posted via Mobile Device I tested the sprinklers and I noticed that the grass has grown over the sprinkler heads and is blocking the pop-up mechanism from spraying the grass. For close mowed Bermuda grass 3″ will work. That means you will probably need around 45 PSI minimum to operate the system since pressure will be lost in the pipes and valves as the water flows to the sprinklers. Understand that this would be a circular 3′ radius area, so if you put them 6′ feet apart that would give you 6′ diameter wet circles that just barely touch each other! You probably know this sprinkler best for the distinct sound it makes when operating– tooka, tooka, tooka, tic, tic, tic, tic, tic, tooka, tooka, tooka, etc… The impact rotors are rapidly being replaced now by gear driven rotors which are very quiet, lower maintenance, and much smaller in size. (Radius of throw isn’t applicable to drip emitters.). The 5 Best Lawn Mowers for St Augustine Grass Right Now. However, times have changed and now plastic is the most common material for sprinklers. See reviews, photos, directions, phone numbers and more for the best Sprinklers-Garden & Lawn, Installation & Service in Saint Augustine, FL. More on that later. You may have noticed I used the term “operating pressure” here rather than “pressure loss” as previously used for other irrigation equipment like valves and backflow preventers. The small 3/4″ inlet rotors sold for residential use work best at 25 to 35 foot spacings. As with other bubblers the area watered by stream bubblers needs to be reasonably level so the water puddles up and doesn’t run off. But that’s laboratory tests, and in the real world a lot of other factors come into play. A new type of miniature rotors has been introduced in recent years and have become extremely popular. Hose-end sprinklers: Great for small- to medium-size lawns. 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