Building Slug-Proof Planting Barrels

Building Slug-Proof Planting Barrels
Living under redwood trees is fantastic, with a few minor exceptions, for die-hard gardeners. My greatest curse-provoker is slug eaten plants. My seedlings hardly have a chance to get started before our slimy natives mow them down. So this project is great to protect food and flower crops from chomping AND to use containers for any reason.

So far, I haven't caught a single slug (banana or otherwise) in this set of barrels. With a drip system installed, plants remain healthy even through hot spells. This is the ultimate low maintenance system for a veggie garden! I recommend installing a drip irrigation system as soon as possible after planting or at the same time.

I could have set up all my barrels in one day, but I paced myself physically and financially by doing this project in stages. And, of course, sometimes you just run out of materials or daylight. You can split the project up many ways. Do what works for you!
 
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Step 1Materials

Materials
Containers - Mine are giant nursery pots purchased at a local garden center. Here's a tip though, if you get them used, you might be able to score them for free or super-duper cheap. Check Freecycle or Craig's List.

Carpet tape - You need indoor/outdoor rated stuff. It is double-sided and has a strip of paper on one side that peels off after getting it positioned. It also comes in white or black, but the color doesn't matter.

Copper tape - This can be quite pricey! In fact, you'll see it a version available that is sticky backed, but it costs more. Use it if you want to cut out a step though. My roll is very, very thin copper with no sticky backing and cost $5 at a garage sale. A steal!

Knife/scissors/pruners - I found a knife to be much more efficient. This is for cutting the carpet tape, copper tape and opening bags of soil. The carpet tape is killer on pruners and leaves them sticky, icky.

Gloves - Always! Protect your fingers from sharp edges, critters, and future sore hands.

Soil - Mix your own or purchase. You're going to need a bunch of it.

Rocks/brick/pavers - My barrels sit on river rock to encourage good drainage and level the area under my containers.

Amendments/fertilizer/compost/worm castings - I use mostly worm castings and home grown compost to make my plants happy, but you may have a favorite plant food. You can also use plant food that is specific to what you are planting (veggies, acid-loving plants, bulb food, etc).

Mulch - You'll see that I top all my beds with rice hulls. It's easy, very cheap, super sustainable, long lasting and appears to keep the cats out of my beds (doesn't feel good in their paws).

And, of course, plants and seeds - My beds are primarily for edibles since I don't have enough sun anywhere else, but I've mixed in all kinds of pollinator friendly plants and some with great foliage that will last beyond my food growing season. I also started all of my veggies from seed this year: some in starter pots on the deck and some right in the barrels. Both are doing well.
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14 comments
Jul 21, 2011. 8:04 AMnorml says:
Wonderful. I'm trying the cheap route with some 3" wide aluminum tape. Day 3 still no slugs or snails in the containers, but we'll see.
Oct 7, 2011. 11:30 AMnorml says:
I'm proud (and lucky) to say this worked not a slug or snail in any container all summer long.
Oct 6, 2011. 7:20 PMPaddyKevin says:
Norml: Did the aluminum tape work over time?

Thanks,
Kevin
Buffalo NY
Jun 5, 2010. 1:52 PMmeliss.wolff says:
Just an FYI, to my knowledge, banana slugs do not eat living plants, they only eat decomposing plants and material...its the brown slugs you have to watch out for...so you may have your sites set on the wrong critters. Banana slugs are actually quite friendly as they are important decomposers. I just went on slug patrol in my garden for the infuriating brown slugs though - I'll have to try the copper technique. Thanks!
Apr 15, 2010. 10:30 PMcliggett says:
what really works great is placing a bowl half filled with beer next the pots
Aug 20, 2009. 11:02 PMWeissensteinburg says:
Did I miss it, or do you not offer an explanation as to why the copper repels them?
Aug 26, 2009. 10:49 AMskittlespider says:
So, is it similar to when you bite down on foil?
Oct 19, 2009. 8:18 PMbackscan says:
Hmm that reaction works so well because of the metal in your fillings and the foil are different metals that react with your saliva to make a battery type reaction. That makes me wonder if using copper and aluminum would get a bigger zap and help stop larson's super slugs. just thinking
Sep 8, 2009. 6:44 PMRaisedByRobots says:
I tried this before when I had a garden and the slugs were more determined I guess. They just went right over it. Oh well.
Aug 22, 2009. 9:33 PMmonkeysee says:
if it matters to you at all, the native banana slug only eats fallen leaf litter and not the live plants in your garden, it's probably the european garden slugs that are the invasive orangey-blackish slugs that devour all your hard work! i live in washington state and i see both daily
Aug 20, 2009. 11:57 PMbruc33ef says:
Good solution to the problem. For another possibility, as they say in permaculture, "you don't have a slug excess, you have a duck deficiency." A couple of ducks or geese will eat slugs all day long, give you about 250 eggs a year each for females, deposit high-quality organic fertilizer on your soil, quack to warn you of visitors, and provide meat. Also, they're even easier than chickens to take care of and are cute and fun to watch and play with.

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Author:meganscottage(Megan's Cottage)
I'm a gardener and crafter... Always looking for a good way to do something, be sustainable and grow something yummy or make something useful.