Leonard ArborRain Tree and Shrub Hydration System, 32 Gallon



Item # AR32
Ship Weight 2.90 lbs
Stock Status In Stock

Gives your plants the perfect amount of water!

Use the Leonard ArborRain Hydration System to give your plants and trees complete water coverage. This high-capacity version holds 32 gallons of water. It utilizes two removable emitters to release this water slowly over a 5 to 8-hour period. The 1-5/8-inch diameter fill port features a threaded cap and fits a wide variety of hoses for quick filling. This model fits trees and shrubs up to 6 inches in diameter. The durable plastic material contains two additives to protect it from sunlight and cold weather.

The Leonard ArborRain Hydration System delivers water deep into the soil. It provides total coverage by hydrating both the root ball and the surrounding soil. This coverage is crucial for newly-planted shrubs and trees as it reduces transplant shock. You can also install multiple ArborRain systems around the drip line of established trees. The helps them thrive in hot and dry conditions.

The low profile design of the Leonard ArborRain, along with its brown color, help it blend into your landscaping. Additives allow for long life outside in the sun and provide resistance to cold weather. A.M. Leonard covers this product with a 5-year warranty!

Product Information


  • Material: Plastic
  • Color: Brown
  • Capacity (gallons): 32
  • Drip time (hours): 5 to 8
  • Inside diameter (inches): 6
  • Thickness (mil): 18
  • Emitters: 2
  • Fill port diameter (inches): 1-5/8

Product Features

  • High-capacity hydration system
  • Two removable emitters
  • Fill port with threaded cap
  • Contains UV stabilizer and cold weather additives

Product Benefits

  • Fill port accommodates a wide variety of hose sizes
  • Double emitters distribute water evenly across the root area
  • Emitters are removable to clear blockages
  • Slow release rate ensures water gets into the root zone where it is needed most
  • Low profile and brown color blend in with surroundings
  • UV stabilized for long life outside in the sun
  • Resists the cold weather just in case you collect your ArborRain™ units late in the season


We cover this product with a 5-year warranty.

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Customer Reviews

Review Summary (Based on 26 Reviews)

Overall Rating: 4/5

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from AZ

Very happy in AZ desert heat


We started with these for newly planted trees and continue to use the larger ones for those that are a little more established. Never had a clogged emitter as we lay down a layer of loose hay first, which really helps keep the gunk away from the emitter. And, we use the Arbor Rain fill nozzle to reduce junk entering from the fill port. Washing off the fill port before opening really helps, too. All in all, the Arbor Rain combined with a good moisture meter has really cut down our water usage while maintaining healthy trees.

from OH

Puts water where it is needed!


The ArborRain Hydrator puts water into the ground over the root system while minimizing runoff. I used it around a newly planted weeping redbud during this summer's drought in SW Ohio. It worked exactly as advertised and the tree is in perfect health.

from MD

"Donut" Hydration Sprouts Holes


Dislike - the "donuts" sprouted holes on its seams and in random spots on the upper surfaces. I could have imagined holes developing on the bottom, but the pin holes developed on the TOP. So, they did not fulfill their function to drip water over a period of hours. Disappointed.

from PA

Worked Well


The wide opening made it easy to fill. The low profile and brown color makes it blend into the landscape.

from AL

ArborRain hydrator


Like the ease of setting up and filing. One problem with it is that you have to make sure once filled that the 2 water exit spouts are not kinked or prevented from releasing water due to soil/rocks, etc. Would recommend for use. C. A. Huntsville, AL

from NY



Great product to help with getting new trees established.

from NJ

ArborRain Hydration System, 32 Gallon


I purchased two of these Hydration Rings to supplement watering two trees on my property during a very hot, dry summer. My sprinkler system was delayed and dragging hose around several acres is not an option at age 63. I don't like filling the rings, it takes forever with my garden hose, but does help the newly planted trees to get their roots established! Thankfully, the sprinklers finally got done and the trees will be watered every day until frost.

from GA

Saving my tree?


I have a golden rain tree that was losing leaves early. I inqired of Walter Reeves TV program and sent a picture. I was informed that my tree needed 60 gallons of water each week. This looks like the only way I can save my tree.

from KS

Watering small fruit trees


I purchased the ArborRain Hydration System AR32 because with the long hot spell I could not keep enough water on the 2 yr old trees as well as everything else needing watered! The ground was not flat so I had to work a little to position them so the water would all drain out. I would recommend them to anyone needing water to keep a steady supply of water. This was a trial run, however we found they worked as well as the more expensive brand. We will be ordering more for the coming summer.

from KY

arbor rain hydration


I think these are junk. They have 2 small holes on each side. The water does not get distributed to the root zone. If on a slope at all, forget about it totally. Also, once the water is dripped out, a quart or more always stays in the bladder. You can not properly drain and fold these up when you are done.

from NE



I have not been disappointed with this product. Currently have several around trees in the horse pasture and they have held up well. Easy to use--fill and forget about them for a week or so. Has saved a lot of time dragging water to distant pasture.

from PA

ArborRain Hydrator


Like the amount of water it holds and how it is disbursed. Hose does slip out of the hole easily.

from WA



Made a difference in just a few days... great way to establish your trees. I purchased 4 since we installed multiple trees. Should have purchased larger and smaller ..we live in a windy area so the larger version does not do well with tree stakes.

from WV



Overall I was more satisfied with having them than not. They were easy to fill. I had 3 newly nursery planted trees that I did not want to lose in the drought we had. I did not think ahead about how the nursery had piled mulch around the trees-they are large. It made laying the bags difficult and uneven. This plus the fact that they are planted on the side of a hill at a 30 percent grade. Parts of the bags drained flat and there were lumpy water filled areas of the same bag that evidently were not draining at the same rate. I tried to adjust the bag to no effect. This was still better than standing out there in 100 degree dry heat watering with a hose. When the rains came the water lay on top of the partially deflated bags and I did not think the trees got the benefit of the rain. I finally I removed them and put them away. I opened the valve and drained out what I could from the bags but there is still water in them and I do not know how I will ever get it out other than letting it evaporate over time.

from OH

Work Great, except for velcro


The product functions great. The velcro fastener can loosen within a few hours of installation. If you have a slow hose you need to make something to hold the inlet up while it fills.

from TX



We are in the middle of a 100 year drought. The arbor rain has been a great tool to assist in the survival of our trees. We are under heavy water restriction so its use has been beneficial and a water saver.


Keeping plants watered


This Product does very well. Save time and water by targeting the area directly close to the plant.

from FL

Nozzles clog, water does not drain


We purchased this system for a large street tree project in hopes that they would provide water in addition to what we applied with our water truck. Very disappointed in how the two nozzles would not drain either because they were bent over under the weight of the water bag, or they would clog as you opened the bag to add water and invariably some dirt or mulch would enter the bag. Tried to improve flow by removing filter on nozzles but even so, did poor job. Many trees died due to lack of water. Nowhere near as good as the upright green bags. Needs to have more than two nozzles and nozzles need to be flush with bag, not a 90 degree elbow design. Ordered over 100 and will be returning for refund.

Gardeners Edge responds: Periodic checking of any hydration system is just good practice, and all hydration devices can be susceptible to water blockage due to soil/mulch contamination entering inside the hydrator while filling. For this reason, the AR20 and AR32 are designed with removable emitters

from TX

great for this drought!


I really like this hydration device, very simple and easy to use. You must level the ground first around the tree, we used mulch to do this. The only issue is a minor one hopefully, the tabs that keep the circle together connect with velcro, all the velcro has come unglued from the tabs, the Texas heat just melts the glue.

from MI

Like big size


Product worked as described. I had these on B&B trees and although they didn't drain totally on an uneven surface they were big enough to do the job. A litle tough to close the valve when full. Good price.

from OH

Do not buy this product


Water will always end up at the lowest spot and the dirt and mulch around almost all of my trees slopes slightly away from the trunk. The water in the bag ends up either at the low point or around the outside edge but the 2 tubes that let the water out are in the middle of the bag. Therefore, water sits in the bag but doesn't flow out the spouts. Unless your ground around the tree is PERFECTLY FLAT this product will be a waste of your money.

from AZ

Arbor Rain System


This is a great all around product for watering trees where irrigation systems are not present. I have my guys use these on newly planted trees. I think the only drawback on them is filling them with water. If there was a product that you could connect to your hose and then connect to the Arbor Rain bladder, I think it could expedite the process. Then it could be hands free.

from CA

Watering a Redwood Tree


In our California native plant garden, we have a Redwood tree that in the past got little soaking water. With the ArborRain, it now gets adequate water at a slow rate.

from CA

Almost perfect solution to my needs


I walk with 2 canes and cannot touch my toes, let alone anything at ground level. I learned that my pomegranite trees might bear better if they had more water whenever they have bloomed. My idea was to hook up a couple of Arbor Rain "donuts" around the drip line. (I added a bit of citrus tree food for good measure.) My plan included attaching 10 foot length of hose to each then to a splitter with a quick connect to the hose. I devised a way to adapt the cover for the fill hole to thread in the hose end and proceeded. At the end of the season I should know if that does indeed fix my problem with having my pomegranite blossoms drop and fail to produce fruit.

from MD

Good product, good price.


The 32 gallon model holds enough water for a 1-2" tree and is much less obtrusive in the landscape than the tall green style. Drip valves can become clogged, but they are easily removed for cleaning. Screw cap is easier to use than the old plug types. As with any tree bag, monitoring to make sure the bag is emptying at an acceptable rate is a must to ensure trees get the water they need.

from WA

Took a chance


I took a chance on the 32 Gal. ArborRain watering system because i needed something that I didn't need to monitor, and also freed my time around the yard. I have not been disappointed. The easy to use screw cap threads easily and the handle is securely fastened to the bag to resist tearing or coming off. Being a new user to this system, I did have to ensure that the inflating bag didn't press against the tree while filling; this is a minor issue that is easily overcome. Overall, very satisfied and will probably purchase some 19 Gal systems to easily rotate around the yard.

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