
Building a self irrigating planter for your home is a great way to keep your plants happy and healthy.
You'll need a few basic materials, including a plastic bottle, some scissors, a drill, and a small watering can or cup.
Start by cutting the bottom off the plastic bottle to create a reservoir for the water.
The reservoir should be at least 2 inches deep to allow for enough water to collect.
Next, drill a few small holes in the sides of the bottle, just above the reservoir.
These holes will allow the plant's roots to draw up the water as needed.
By following these simple steps, you can create a self irrigating planter that will help your plants thrive.
Building a Self-Irrigating Planter
Building a self-irrigating planter is a fantastic way to ensure your plants get the water they need, even when you're away. This type of planter uses a clever system to keep the soil consistently moist, reducing the need for daily watering.

The secret to self-irrigating planters lies in the perforated drain pipe, which allows excess water to flow out while keeping the soil at the right level of moisture. You can choose from various materials for the pipe, including EPDM pond liner, which is a popular choice.
To build a self-irrigating planter, you'll need to consider the size of the planter. A 4-ft.-wide planter is ideal for harvesting from both sides, while a 3-ft.-wide planter is better suited for placement against a wall or fence. Don't forget to line your planter with a "fish-safe" rubber membrane to prolong the life of the wood.
The type of soil you use is also crucial. Avoid using garden soil or heavy potting soil, which can compact and become waterlogged. Instead, opt for a light, fluffy "soilless" blend specifically designed for self-watering planters.
Here are some key considerations to keep in mind when building a self-irrigating planter:
- Choose a spot that gets at least six hours of sun.
- Use a "fish-safe" rubber membrane to line the planter.
- Avoid using garden soil or heavy potting soil.
- Use a light, fluffy "soilless" blend specifically designed for self-watering planters.
- Mulch your containers to keep weeds down and slow evaporation.
By following these tips and using the right materials, you can create a self-irrigating planter that will keep your plants happy and healthy, even when you're away.
Benefits and Tips

Self irrigating planters are a game-changer for busy people like me, who often forget to water their plants.
A well-designed self irrigating planter can save your back and knees, as you won't need to bend down to water your plants regularly.
You'll also have fewer weeds, as the self-watering system prevents overwatering and promotes healthy soil.
Here are some key tips to keep in mind:
- Choose a spot that gets at least six hours of sun, or at least reflected heat if your planter is against a wall.
- A 4-ft.-wide planter is ideal for harvesting from both sides, but keep it to 3 ft. wide if it's against a wall or fence.
- Line your planter with a "fish-safe" rubber membrane to prolong the life of the wood and prevent chemical leaching.
- Use a light, fluffy "soilless" blend that retains moisture without compacting or becoming waterlogged.
- Mulch your containers to keep weeds down and slow evaporation.
With these tips, you'll be well on your way to enjoying the benefits of a self irrigating planter.
8 Reasons to Build This Planter
Building a self-watering planter is a great idea, and here are 8 compelling reasons to do so.
It saves your back and knees by eliminating the need to constantly water your plants.
You'll have fewer weeds because the self-watering system helps to prevent overwatering, which can lead to weed growth.
This type of planter waters your plants while you're away, giving you peace of mind and more free time.
For another approach, see: Self Watering Plant System

It saves water by allowing the plant to drink from a reservoir on an as-needed basis, reducing waste and conserving this precious resource.
You'll have fresh veggies steps from your back door, making it easy to enjoy the fruits of your labor.
It's easy to create the perfect soil by using a light, fluffy "soilless" blend that retains moisture without compacting or becoming waterlogged.
This planter protects your veggies from hungry critters by providing a safe and secure environment for your plants to thrive.
A 4-ft.-wide planter is ideal for harvesting from both sides, making it a great option for small gardens or patios.
Happy Houseplants
Houseplants crave consistency in watering, but it's hard to provide that when you're busy. Two cups of water one week might be too much or too little the next.
Self-watering planters eliminate the inconsistency in watering by allowing the plant to drink from a reservoir on an as needed basis. It also provides more consistent soil moisture for a longer period within the pot.
Curious to learn more? Check out: Self Watering Ceramic Pot

These planters are sometimes called "sub-irrigated planters" or SIPs, because your plants get to "sip" water whenever they want. Inexpensive perforated drain pipe with a fabric sleeve in the bottom of the planter is a simple and effective solution.
Houseplants have a problem - they rely on human caregivers to provide water, light, nutrients, pest management, and more. But humans are inconsistent, and it can be difficult to infer exactly how much water to give your plant at any given time.
Sub-irrigated or self-watering planters eliminate the guesswork of watering by allowing plants to water themselves. This reduces the risk of overwatering, which is the single biggest reason houseplants perish.
Here's a simple way to make your own self-watering planter: use inexpensive perforated drain pipe with a fabric sleeve in the bottom of the planter.
If this caught your attention, see: Garden Irrigation Pipe
Materials and Preparation
To build a self-irrigating planter, you'll need a variety of materials. The total cost of the materials can range from $250 to $330, depending on whether you use treated wood or cedar.

You'll need eight 2×6 cedar boards, 8 feet long, to create the planter's frame. Three 1/2-inch exterior grade screws and exterior-grade wood glue will help hold the frame together. Two 1×2 cedar boards, 8 feet long, will be used for additional support.
Here's a list of the materials you'll need:
- Eight 2×6 cedar boards, 8 feet long
- Three 1/2-inch exterior grade screws
- Exterior-grade wood glue
- Two 1×2 cedar boards, 8 feet long
- 1 3/4-inch exterior grade screws
- Four 1×4 cedar boards, 8 feet long
- 18-gauge stainless steel nails, 2 inches long
- 1/2-inch plywood
- 3/4-inch exterior grade screws
- Metal handle
- Clear epoxy
- 2 7/8-inch exterior grade structural screws
- Raised bed soil
- Plants
Store Water in Pipes
Self-watering planters, also known as sub-irrigated planters or SIPs, are a great way to keep your plants consistently moist without overwatering. These planters use a system of water reservoirs and air circulation to provide plants with the water they need.
Perforated drain pipes with fabric sleeves in the bottom of the planter are a simple and inexpensive way to create a self-watering system. The vinyl tubing allows any overflow water to drain, preventing waterlogged soil.
The EarthBox is a great commercial option for self-watering planters, but you can also easily make your own using a few basic materials. With a self-watering planter, you can reduce evaporation and water your plants less often, making it a great option for busy gardeners or those who tend to forget to water their plants.
On a similar theme: Planters for Succulent Plants

Here are some key components of a self-watering planter system:
- Perforated drain pipes
- Fabric sleeves
- Vinyl tubing
- Water reservoirs
By using a self-watering planter, you can give your plants the consistent moisture levels they need to thrive. Even plants with shallow root systems, like cacti and succulents, can be successful in a self-watering planter as long as they receive adequate light.
Materials
You'll need a variety of materials to build a self-watering planter. For the frame, you'll require eight 2×6 cedar boards, 8 feet long.
For the inserts, you'll need 1/2-inch plywood cut from a 2×2 project panel. The inserts also require a fill tube, which can be a CPVC fill tube, and a white fill tube indicator.
You'll also need exterior-grade wood glue, 3 1/2-inch exterior-grade screws, and 1 3/4-inch exterior-grade screws. Additional materials include 18-gauge stainless steel nails, 2 inches long, and a metal handle.
Related reading: Long Wood Planter Box
Maintenance and Care
Regular maintenance is key to keeping your self-irrigating planter working effectively. Clean the fill tube and indicator regularly to prevent algae growth.

You should also check the drain plugs for any signs of wear and replace them if necessary. This will ensure that water can flow freely and prevent any potential damage.
In colder climates, consider emptying the water reservoir during winter months to prevent freezing and potential damage to the system. Drain excess water at the end of the season by prying out the plugs on either end of the planter with a flat-head screwdriver.
Make sure the soil remains loose and aerated to allow roots to access water efficiently.
The Science
Plants absorb water through osmosis, a process that helps them move water throughout the plant using capillary action and water potential differences.
Transpiration is the whole process by which plants use water, and it's influenced by factors like light, heat, and humidity.
Regular contact with water is essential for roots to draw enough water to keep plants rigid, which is why you might see your peace lily drooping when it gets too dry.

Sub-irrigation allows plants to access water as needed, making it the easiest way to ensure they have enough water.
On darker, damper days, plants require less water than on hot, dry days, and by having access to a reservoir, they don't need to rely on you to make incremental changes in watering.
Frequently Asked Questions
What to put in the bottom of a self-watering planter?
You can use gravel or perlite in the bottom of a self-watering planter to create air spaces that store water, reducing watering frequency. Both options are effective, but perlite is lighter and more expensive, while gravel is heavier and cheaper.
What plants don't like self-watering planters?
Succulents and cacti are not ideal for self-watering planters due to their preference for drier conditions
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