Frequently Asked Questions

The best method is to allow rain and snow to naturally refill your TreeDiaper®. You can also recharge your TreeDiaper® in bucket overnight or for 5 hours. We recommend customers install TreeDiaper® 2 months before rainy season is over for the best results.
You can also use a water hose on TreeDiaper® for 15 minutes, but keep in mind that our product does not absorb water as quick as the water hose dispenses it, so this may not fill your TreeDiaper® completely. The majority water runs off when you use a water hose. Recharging TreeDiaper® in bucket or watering it for 2 minutes a day for a week will work better than 15 minute block of watering. If your region is in severe and long term drought, you may use drip irrigation in combination with TreeDiaper® Advanced Hydration System. It saves much more water than drip irrigation alone and will help you to catch some rainfall during the rainy season.
Lots of people tell us our product's name is silly! The truth is, we chose "TreeDiaper" because of our dedication to developing new ways to keep the planet green. Did you know baby diapers are currently not recycleable? Think of how much waste this contributes to landfills!
Our founder, Hailing Yang, used this as her inspiration. TreeDiaper® is made from similar materials to baby diapers, so we hope to use our technology to recycle baby diapers in the future, thus eliminating waste. In fact, TreeDiapers made with pre-customer recycled baby diapers are available right now by request.
You can cover TreeDiaper® up with mulch, leaves, and other larger coverings. Fine particle coverings, such as dirt, sand, and compost should be avoided, as they will decrease the functionality of TreeDiaper®.
NO. We do not recommend this. Using only part of our product will result in an uneven soil moisture distribution; the product will not work as intended.
TreeDiaper is designed for younger trees but it can be used with plants of all sizes and ages. For a dry TreeDiaper, we recommend installing it two months before rainy season is over so that it can be charged with natural rainfall. It is best to fill the TreeDiaper with water by soaking it in a bucket before placing it on your plants, especially if you are installing it during a dry season.
How often you should water TreeDiaper® depends on the temperature and humidity in your region, as well as the time of year. If your region has much less precipitation, we recommend you check on your tree every two weeks.
Generally, TreeDiaper only needs to be watered once every month if there is less than one inch of rain.
It depends on the temperature, humidity, wind, and many other factors. In our laboratory tests, TreeDiaper® usually lasted 45 days before drying out.
It depends on the size of the product. TreeDiaper® has a 0.3-30 gallon capacity with dimensions of 10 inches to 48 inches.
It depends on how much rainfall you have in your region. In one of our case studies from Virginia, roadside trees installed with TreeDiaper® went five years without watering. This five-year period included several seasonal drought conditions, but all trees survived nonetheless. If your region has much less precipitation, we recommend that you check on your trees every two weeks, but it is likely that you will only need to water them once every month, even if there is less than one inch of rain. You have to water trees as often as watering bags require.
Depending on the evaporation rate and rainfall in your area, you may want to check once every two weeks to make sure the soil is moist. If the soil gets dry, water them with a watering truck for 15 minutes.
No. Only four states in the USA have laws regarding rainwater collection, and most do not apply to our product. If you are concerned, we recommend checking with your particular area.
We determine the product size based on the stem size for plants growing in ground. If space is limited, it will be up to the user to determine the right size to fit the space. For plants growing in containers, the shape and size can be determined based on the dimension of the container.
The conventional methods of watering trees (including using watering bags) does not account for runoff water, evaporation and weed competition. Dumping water on the root ball makes the growing condition like those in a container and in a nursery. Trees are not encouraged to grow roots outward into the surrounding environment to find water. TreeDiaper® Advanced Hydration System reduces runoff, reduces evaporation, eliminates competition, and encourages outward root growth. With all these features combined, we found trees find enough water to survive seasonal droughts without watering or very little watering
Definitely; it saves even more water than irrigation in one field test carried out in a nursery.
Unlike watering bags, they are buried under mulch and not exposed to sunlight. Therefore, it will not heat up much. TreeDiaper® serves as a heat sink for the tree root system which prevents root damage. Similarly, it protects tree roots in harsh winter weather.
In our field tests in central Virginia, we did not notice fungi-related problems. On wet and warm weather, mushrooms are seen everywhere, there was no fungi-related problems underneath TreeDiaper®. We also have not experienced any problems with bugs.
Leave them outdoors; there is no need to take them inside. The rainy/snow season in many parts of North America will charge your TreeDiaper® so they will be prepared for spring time.
No, freezing and thawing won’t cause any damage. We have some left in fields for five years in central Virginia area and they are still in good shape.
Damaged TreeDiaper®s will still function, just not as well. You may cover a damaged TreeDiaper® with mulch and continue using it.
Mix leaked pellets up with soil. They are agricultural grade and will do no harm to the environment.
It depends on the type of fertilizers. Burying fertilizers in soil under TreeDiaper® are using. Most organic fertilizers are fine. Here are some individual fertilizers that may be considered:
N: Urea (the largest agricultural nitrogen fertilizer) such as Ammonium and Ammonium Nitrate are fine.
P: mono-ammonium phosphate, di-ammonium phosphate and ammonium phosphate. At high concentration, it may temporarily reduce water holding capacity. But it can be recovered rather quickly.
K: Potassium Chloride, Potassium Sulfate, and Potassium Nitrate. At high concentration, it may temporarily reduce water holding capacity. But it can be recovered rather quickly.
Try to avoid fertilizers or additives containing metal irons other than Group I (Alkali Metals) such as Aluminum, Iron, Calcium, Magnesium, which are common in many mixed type fertilizers.
The biggest difference between the typical method of using hydrogels and TreeDiaper® is that our product reduces storm-water/irrigation water runoff. Conventionally, hydrogels are used by mixing it with the soil. For surface irrigation methods and natural precipitation, water has to penetrate a certain depth of soil before reaches hydrogel particles, so it does not reduce runoff. Hydrogels increase soil moisture, but only when when there is enough water in the first place (recent rainfall, irrigation), which defeats the purpose. Hydrogels in soil neither reduces evaporation nor eliminates weed competition. Sometimes, hydrogels can compete with plant for moisture, like desiccants.
TreeDiaper® Advanced Hydration System uses hydrogels to catch, store and slowly release back water to root system. It does not compete with root for moisture. Instead, it releases water into soil so that the plant can use it.



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