Oya™ Watering Spike

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Sale price$14.95 Regular price$19.95
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  • Perfect for indoor and outdoor plants
  • Save time with less watering
  • No more ugly looking bottle reservoirs

Size: One-Pack
Oya Watering Spike - Size Guide

The Oya™ Watering Spike best fits any indoor pot or outdoor planter larger than 8". It may fit some smaller/irregular pots if the plant has a small stem, however the Spike won't be fully buried (which is fine).

The Spike measures 7.5" tall and 4" wide at it's largest point.

We recommend 1 Spike per pot as it will cover a 18" diameter.


Meet the Oya™ Watering Spike, an indoor sleek, high-capacity 16oz watering reservoir crafted from our proprietary Oya™ porous clay. Ideal for pots 8” or larger, it slowly releases water when your plants need it. Just insert and refill when needed. Perfect for indoor plant lovers who want more greenery and a beautiful looking space.

The Oya™ Watering Spike is perfect for thirsty, water-loving plants. Do not use it with plants that don't like water, such as Cacti, Succulents, or any desert plant.

While normally our free shipping threshold is $125, the Spike ships free over $50! Ignore the cart message and head to checkout for free shipping over $50 on this item.

90-Day Money Back Guarantee

We GUARANTEE that you will love your Oya™ Watering Spike in 90-days or your money back.

Extends Watering up to 7 days

Add the Oya™ Watering Spike to extend your plants water reservoir up to 7 days.

No More Ugly Bottles

The Oya™ Watering Spike looks great in any interior versus plastic bottles.

3-Minute Installation

The Ultimate Indoor Watering Solution

Easy To Install

Remove a handful of dirt and push the the Oya™ Watering Spike straight down or at a slight angle (whatever fits best) into the pot until 2/3 of the spike is buried.

Fill the Oya™ Watering Spike, surface water, and you're done!

When To Refill

First, follow any watering instructions on the original plant tag. Then, put your fingers two inches into the soil and:

  • If your plant doesn’t like a lot of water and the soil is cool, WAIT until the soil is dry to refill your Spike once it’s empty. 
  • If your plant likes water and the soil is cool, refill your Spike when it’s empty.

Continue to surface water when you refill the Spike.

The Patina

The top of the Spike will develop a Mineral Patina pattern. Similar to how leather changes color, the mineralization of water will create unique white rings around the exposed area of the Spike. This is 100% natural, promotes healthy mineral separation, and creates a unique look on each spike.

Customer Reviews

Overall rating: 4.9 / 5 from 33 reviews.

These ollas hold enough water for a single plant in a pot to last a couple of days. Nice that you don't have to perch a plastic bottle on top. Perhaps you could, I haven't tried it. At any rate they are very functional and cute!

Oya™ Watering Spike

Customer photo review of Oya™ Watering Spike

Peace of mind. We were away for 7 days. I filled all spikes full before departing. When I arrived home yesterday the spikes were empty (which I expected) but the soil was moist AND all plants were doing great! Just what I had hoped for!

Oya™ Watering Spike

Customer photo review of Oya™ Watering Spike

The plant are still alive after two weeks, a record for me balcony. Saying up to five days is a stretch, I berley get three.

Oya™ Watering Spike

Easy, Efficient, Effective! I’ve been looking at getting these for a while now and finally did. I set it up before going on vacation in my grow bags and in a corner of my raised bed that doesn’t have a drip connection. It kept my potatoes and ginger going strong while I wasn’t home and they’re super easy to fill back up etc. love mine!

Oya™ Watering Spike

Customer photo review of Oya™ Watering Spike

Love these teardrop shaped growoya. Perfect for my potted plants.

Oya™ Watering Spike

Customer photo review of Oya™ Watering Spike

I love the Ollas! The small ones are wonderful for pots. The medium ones and larger ones are great for raised beds. I've attached 2 photos, one shows the small olla in a container pot with yellow bee balm and the other shows the larger size in one of my raised beds. It's mid-spring here in Tucson, so I've already covered my raised bed with shade cloth. One can just see the beginning of summer seeds popping up and 2 Wooley Milkweed plants under the black shade cloth. The yellow bee balm is doing quite well in the container. The milkweed and summer seeds were just recently planted so they are still small.

Oya™ Watering Spike

Customer photo review of Oya™ Watering Spike

LOVE THEM! They will be used in my grow bags. I am very familiar with this product and have approx 10+ Oya’s in-house that I have been using for the past several years for my raised above ground planters. Also, the large size Oya keeps my two rose shrubs very happy. No over watering! PS: my son who lives in Washington State, just purchased 4 large Oya’s for his raised garden bed - he keeps hearing me talk about how great they are.

Oya™ Watering Spike

Great product, easy to use, fast shipping!

Oya™ Watering Spike

I live in an apartment without any exterior water. Using a water can from my kitchen I can bring water to my planters on my small patio and it keeps staining water from going on to the patio . Perfect ! thank you

Oya™ Watering Spike

I’m in the process of planting spring seeds. These spikes are a gift of water in the AZ desert.

Oya™ Watering Spike

Customer photo review of Oya™ Watering Spike

Love it! I consistently kill plants - mostly through worrying over them and over-watering. With the oya spikes it's just like filling my own glass of water - I check how if my plant's "cup" is empty and refill as needed. My orange trees have happily thrived!

Oya™ Watering Spike

Customer photo review of Oya™ Watering Spike

I'm experimenting with grow bags and containers this season, but seem to struggle with the watering needs. I've added GrowOya to the containers of the unhappy plants. I'm happy let my plants recover from my mistakes with a watering system that is designed to give them what they need.

Oya™ Watering Spike

This is a birthday girft for my daughter. I am looking to purchase a couple for my self as well soon when these are on sale.

Oya™ Watering Spike

I love the Growoya ollas and have had good success with the pots and the spikes. In general they work better than my homemade ones and some cheaper ones I’ve found on Amazon. My only complaint is the confusion on the website regarding shipping. Some of the items say free shipping over $50 but when you put >$50 in your basket it tells you that you need $x more to be greater than $125 to get free shipping. Basically what I see and understand is that you have to order more than $125 for free shipping. The seller should probably revise the website to reflect the correct info. Other than that I will continue to buy these ollas.

Oya™ Watering Spike

Customer photo review of Oya™ Watering Spike

I have been a Grow Oya fan for years, using them in my outdoor planters to grow flowers, herbs and even trees! But my indoor houseplants have been suffering. I have actually had the thought multiple times that I wish there was an Oya I could use inside my house. And now there is!! The Oya spike is the perfect solution to keeping my indoor plants healthy and thriving. I love that I only need to fill it up once a week or so and it looks so pretty too. In my plant pot, it sticks up just a little bit and looks really beautiful nestled amongst the green leaves. Thank you GrowOya for continually bring us new and amazing products!

Oya™ Watering Spike

Finally some help for my beds during the blazing heat and strong winds out this way! Thank you Growoya :)

Oya™ Watering Spike

Love them so far. I am using them in crates that I am trying to grow potatoes in. We are going away for a week. I have no doubt that my potato plants will have plenty of water while we are gone.

Oya™ Watering Spike

These are great. I had some outdoor potted plants in the bright sun that were drying out too fast. If I forgot them for a day, they were in trouble. The growoyas are definitely making the situation more forgiving!

Oya™ Watering Spike

I have a couple finicky indoor plants that I forget to regularly water. These help keep the soil moist. They’re also the perfect size for small outdoor pots. I plan to buy more next garden season for my herbs etc. that I put in small pots.

Oya™ Watering Spike

Great addition to our potted blueberries and grow bags!

Oya™ Watering Spike

Customer photo review of Oya™ Watering Spike

Love these- they’ve already gotten my herb pots through a heat wave, leaving everything (including starts) healthy and thriving. I will be getting more, and gifting them to friends.

Oya™ Watering Spike

Customer photo review of Oya™ Watering Spike

I am loving the new smaller size, using in outdoor smaller pots, strawberries are loving them. Have never had a breakage during shipping for any of the sizes I have purchased.

Oya™ Watering Spike

Customer photo review of Oya™ Watering Spike

My indoor plants are often forgotten. The new Spikes have added some reassurance that they will survive! Plus, they look good in the planters!!

Oya™ Watering Spike

This is an excellent product for house plants in large pots. Quality is exceptional. I purchased 4 of these spikes recently. Love them! I've also purchased several of the medium and large Ollas for my outside gardens. This is a wonderful product! Jane B.

Oya™ Watering Spike

We live in the mountains in Arizona. The Oya has come in particularly handy as a watering method. It keeps our plants hydrated so we don't have to worry.

Oya™ Watering Spike

Much better than the spike which requires a glass bottle.

Oya™ Watering Spike

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