Wall of waters (WOWs)
Wall of waters are season extenders to use to protect plants. I use mine as plant protectors in the spring to get certain plants like tomatoes and peppers out earlier in the season when they are smaller than what is normally recommended and cold at night. Never use them in summer when it is hot-you will ‘cook’ your plant inside them.
What are wall of waters (WOWs)?
When the cells are filled up with water, they keep the plants warm by heating up in the daytime and releasing the heat for the plant at night. Wall of Waters are about 11″ tall so your plant will need to be small enough to fit inside to get protection.
Any taller plants will not be protected if they extend past the top of the wow. It acts as insulation to protect tomato plants from cold, rain, snow and wind.
Always put them around your plant in the morning, on a sunny day, so the water has time to heat up to protect them at nite.
Why do I do this?
-Living in a short growing season area, I can get plants outside earlier, knowing they will be protected from a freezing nite-actually down 26 degrees (I’ve even read it can protect to lower temps!) By using them, I can transplant my tomatoes outside earlier. The last few years, I’ve shaved off about 2 weeks from my schedule. I use to put my tomatoes out around May 15th which is the supposed first frost FREE day here in Santa Fe, NM-Zone 6B. Now I sneak them in the first week of May but maybe not this year with the wild temperature swings. And they work beautifully. This means that I will get ripe tomatoes sooner than if I waited for the outside temps to warm up before planting outside.
-The other thing they do is offer protection from our WIND, which can be ferocious in the spring and thrash your crops.
-And I even used them for my pepper plants too, which are even more cold sensitive than tomatoes. I will wait to plant pepper plants this year till the first week of June. Both tomatoes and peppers are warm season crops. You could even try them for eggplant starts. Wall of Waters come in a 3-pack. There are also many me-too products of wow that should be fine.
You can see the video here of how to use the wall of waters. Notice I plant the tomato in the ground, make a well around the plant, put drip line around the plant if you are using drip, and then put a 5 gallon bucket inverted over the plant, and put your empty wow over the 5 gallon bucket. This helps keep it from tipping over and squishing your plants when you start to fill the plastic cells with water. I usually do 2 cells on one side, and then go across to the opposite side and fill 2 cells and then start to fill the other cells around adjusting the wow to stand straight till all cells are filled up and then reach in and pull out the bucket and the wall of water will stand up. Because I live in a windy area, I also put some bamboo stakes inside right up against the wow on the inside but do not pierce it. This helps fight against the wind from knocking the wow over.
–Be sure you take off the wows when it gets hot in June as leaving them on can fry your plants (remember the walls are heating up and it could get really hot inside). I only use these as an aid to get plants out earlier in spring.
-Let them dry out after you are done and store your wow’s in some kind of mouse-proof container to keep mice from eating holes in them in the off season.

















