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DIY Self Watering Planter – Make a Self-Irrigating Plant Pot with A Pet Bottle




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Automatic watering systems are great for keeping your plants healthy and hydrated, but they can be expensive to buy and install. If you’re looking for a budget-friendly option, you can make your own self-watering planter with just a few household items. All you need is a plastic bottle, some gravel, and some potting mix. Simply fill the bottle with water and place it upside down in the pot.

Then, add a layer of gravel on top of the bottle to help keep the soil in place. Finally, fill the pot with your chosen plant and cover the roots with potting mix. The water will slowly seep out of the bottle and into the soil, keeping your plant hydrated for days or even weeks at a time. With this easy DIY project, you can enjoy all the benefits of an automatic watering system without breaking the bank.

DIY Self-Watering Planter

In this article, I will explain how to easily make a self-irrigating pot with an ordinary PET bottle. No need to be good at DIY, you can recycle PET bottles that have contained a drink and you may have a piece of rope or nylon tape lying around somewhere in a closet or drawer.

DIY Self Watering Planter – Make a Self-Irrigating Plant Pot with A Pet Bottle

Make a Self-Irrigating Plant Pot with A Pet Bottle

You can easily make a self-irrigating pot with an ordinary PET bottle. First, cut the bottom off the bottle and then make a small hole in the center of the bottle lid. Next, insert a piece of rope or nylon tape through the hole in the lid and then tie it to the end of a bamboo stick or other long rod.

Finally, Fill the bottle with water and place it next to your potted plant. The water will slowly seep out of the bottle and into the soil, providing your plant with a steady supply of moisture. With this simple DIY project, you can ensure that your plants always have access to water, even when you’re away on vacation.

Watering Plants Often Is Guesswork

For many gardeners, watering plants is more of an art than a science. After all, every plant is different, and each one requires a different amount of water depending on the time of year and the weather conditions. As a result, water plants often feel like a guessing game, and it can be difficult to know when to give them a drink.

  • You don’t know how much water your plant needs because not everyone is a plant geek who knows hundreds of plants by name and cultural conditions.
  • The surface layer may be dry, while the deeper earth below is wet and decaying roots.
  • A plant’s watering needs change on a daily basis, depending on the weather: it is either very hot one day, or considerably cooler the next. Your plant requires more or less water depending on the weather.

One way to take the guesswork out of watering plants is to invest in a moisture meter. This simple tool can help you to determine how much water your plants need, based on the current conditions. By using a moisture meter, you can be sure that your plants are getting just the right amount of water – no more, no less. In addition, moisture meters can help you to avoid overwatering, which can lead to problems such as root rot.

Is Self-Irrigating Beautiful?

Algae growth in water reservoirs is not only unsightly, but it can also pose a health risk to humans and animals. While there are many factors that contribute to algae growth, one of the most important is the presence of nutrients. Lawns can help to prevent nutrient runoff by acting as a buffer between the soil and the water.

When lawns are well-tended, they help to keep nutrients in the soil where they belong. In addition, lawns help to slow down the flow of water, giving the ground a chance to absorb the water before it runs off. As a result, a well-tended lawn can play an essential role in preventing algae growth in water reservoirs.

Is Self-Irrigating suitable for all plants?

There are different answers:

  • Yes, for plants that require little water and those that need to be in a constantly wet environment, as well as for several other ornamental applications. What’s the difference? Because the plant draws only what it requires.
  • No, not for all plant sizes: a plastic bottle is not very big and when the plant becomes too tall, the bottle may fall over at the slightest blow or breath of air.

One of the main benefits of self-irrigating planters is that they help to reduce water waste. By storing water in a reservoir and delivering it directly to the roots as needed, self-irrigating planters can help to prevent over-watering. In addition, self-irrigating planters can help to improve plant health by providing a consistent supply of moisture. However, not all plants are well suited for self-irrigation.

Plants that require very little water, such as succulents, cacti, and certain types of bulbs, may actually suffer from too much moisture if planted in a self-irrigating planter. In addition, self-irrigating planters are not always necessary for plants that are native to wetter climates. If you are unsure whether a self-irrigating planter is right for your plant, it is best to consult with a knowledgeable nursery or gardener.

Though often overlooked, the pots we use to grow our plants can have a significant impact on their health and vigor. For example, it is important to choose a pot that is the right size for the plant. A pot that is too large may allow the roots to spread out too much, while a pot that is too small can stunt the plant’s growth.

Additionally, the material of the pot is also important. Plastic pots are often inexpensive and lightweight, but they can also break easily and may not provide adequate drainage. Conversely, clay pots are heavier and more fragile, but they tend to be more durable and breathe better, allowing excess moisture to escape. Ultimately, there is no one perfect type of pot, and the best choice depends on the individual plant’s needs. However, taking the time to select the right pot can make a big difference in the long-run health of your plants.

Advantages of Self-Irrigation

One of the great advantages of self-irrigation is that it provides a regular water supply to the plants. This is especially beneficial for plants that are susceptible to drying out, such as cacti and succulents. With self-irrigation, these plants can be watered once a week or even once a month, depending on the size of the reservoir. This is much less frequent than traditional watering, which can be done daily or even multiple times per day.

Self-irrigation is also suitable for all types of plants, from cacti and succulents to marsh plants. In fact, many plants grow much better with a regular water supply. This is because the roots are constantly being supplied with moisture, which helps them to stay healthy and absorb nutrients more effectively.

 Self-irrigation can be used for cultivation in soil or hydroponics. In hydroponics, a specialized hydroponic fertilizer can be added to each watering. This is not necessary with soil cultivation, as the moisture from the self-irrigation system will help to keep the soil moist and nutrient-rich.

  • Because it uses a constant water supply, there’s less of a chance that it will dry out (unless you forget to fill the reservoir when empty).
  • Most plants need regular watering to stay healthy, and hand-watering can be time-consuming, particularly during hot summer months. Self-irrigation systems can help to solve this problem by delivering water directly to the roots of your plants.
  • Saves you time, but it can also help to reduce water waste as the water is less likely to evaporate before the water reaches the roots. In addition, self-irrigation can help to prevent root rot, as the roots are not constantly sitting in water. As a result, self-irrigation systems can provide a number of benefits for both you and your plants.
  • Water less frequently: depending on the species, size, and climate of your garden center, you may water once a week or even less.
  • Suitable for a wide range of flora, including cacti and succulents as well as marsh plants. Cacti and succulents thrive even more efficiently when they have access to water on a regular basis.
  • In soil or hydroponics, the type of substrate is irrelevant because the wick transports water to the roots. Add specialized hydroponic fertilizer to each watering in hydroponics.

Self-irrigation offers a number of advantages over traditional methods of watering plants. Perhaps most importantly, it helps to reduce water waste. With self-irrigation, plants are only watered when they need it,rather than being watered on a set schedule. This can save a significant amount of water over time, which is especially important in drought-prone areas. In addition, self-irrigation can help to reduce the spread of disease. By watering plant roots directly, rather than wetting leaves and stems, self-irrigation helps to limit the amount of moisture that is available for fungal diseases to take hold. As a result, self-irrigation can help to keep plants healthy and vigorous.

Self-Irrigation Drawback

While self-irrigating pots are a great way to keep your plants healthy and hydrated, there are a few potential drawbacks to consider. One is that you will need to regularly refill the reservoir, which can be tedious if you have a lot of plants.

Additionally, if you forget to refill the reservoir, your plants will quickly dry out and may die. Finally, self-irrigating pots can be quite heavy when filled with water, so be sure to place them on a sturdy surface. Overall, self-irrigating pots are a great option for those who want to make sure their plants always have enough water, but they require some effort and vigilance to maintain.

How Do You Water Self-Irrigating Pots?

Watering self-irrigating pots is easy and stress-free, meaning you’ll never have to worry about your plants again. Simply lift the pot and fill the reservoir with water, till just below the cap. The first time or if you forget to water, moisten the substrate and the wick by watering a bit on top of the soil. The cap prevents leakage of soil into the reservoir, so you can be sure your plants are getting enough water without making any mess. Whether you’re busy with work or taking a vacation, self-irrigating pots are a great way to ensure your plants stay healthy and happy.

Self-Irrigating Materials

  • The most significant difference between a PET bottle and any other container is that it has been used to contain a beverage. They’re safe for food because they are also safe for plant growth.
  • A pocket knife, such as a Gerber or Buck knife, can help.
  • You may break out the glass with your hands and pry it away from the window frame using a Stanley knife or box cutter.
  • To help keep pests out, duct-tape an empty tuna or chicken can to the inside. If not removed, the foul odor of decaying flesh will be evident within a few hours, if not sooner.
  • The substrate may be soil, coconut fiber, expanded clay pellets, or any combination of the three.


  1. Using a cutter or scissors, cut a PET bottle in half.
  2. The water reservoir will be located at the bottom of the bottle.
  3. The plant and substrate will be stored in the upper portion of the bottle, which includes a bottleneck.
  4. Remove the bottle cap using a cutter to make a cross.
  5. Cut a length of nylon rope to the required length for it to reach the bottom of the reservoir and the roots in the higher section.
  6.  Thread the wick through the notch in the bottle cap until it is all threaded.
  7. Put the top back on the bottle and replace the cap with it.
  8. A cap is not required, but it prevents soil from seeping into the water reservoir. 
  9. Fill the container with your growing medium (soil, coco fibers, expanded clay pellets…).
  10. Fill the container with the rest of the substrate and set the plant on top. 

That’s it—the plant is finished. Place the plant pot on top of the water reservoir.

Fill the reservoir at least halfway with water, then lift the plant pot and fill it to just below the cap. Water from above moistens the substrate and wick for the first time. Capillary action will cause the water to rise after that.


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