Catch the Sky, Grow the Garden
Give IBC totes their most creative second life. Our upcycled rain barrels and garden planters transform end-of-service containers into functional, eco-friendly additions to your home or farm. A single 275-gallon IBC rain barrel captures more water than five standard 55-gallon drums combined — on the same footprint as a single pallet.
Each piece is crafted from carefully selected IBC totes that are thoroughly cleaned before modification. We offer ready-made options and custom builds to suit your space. All rain barrels include a screened inlet, overflow port, and bottom-mounted spigot. All planter beds include drainage holes and are delivered with the steel cage frame intact for structural support.
Rainwater harvesting is legal in Missouri and most US states. Using harvested rainwater for garden irrigation can reduce your municipal water bill by 30-50% during the growing season, depending on garden size and rainfall patterns. St. Louis receives an average of 42 inches of rainfall per year — enough to fill a 275-gallon barrel roughly 25 times if connected to a 500 sq ft roof section.
Rain Barrels
275-Gallon Rain Collection System
Our full-size IBC rain barrels capture up to 275 gallons of rainwater per fill. Connected to your gutter downspout, a single barrel can supply enough water for a medium-sized garden throughout the dry season. The IBC format offers 5x the capacity of a traditional 55-gallon drum on roughly the same ground footprint, thanks to the square shape and vertical design. Each unit includes:
- Screened top inlet (keeps debris and mosquitoes out)
- Bottom-mounted spigot with garden hose adapter (3/4" GHT)
- Overflow port for daisy-chaining multiple barrels
- Optional opaque cover to prevent algae growth
- Existing cage provides structural support and prevents tipping
- Pallet base raises outlet above ground level for gravity feed
Half-Height Rain Barrel (140-Gallon)
For patios, decks, or tight spaces where a full-height IBC is too tall, we offer a half-cut version that holds approximately 140 gallons. The steel cage is trimmed to match the reduced bottle height, and all the same features (screen, spigot, overflow) are included. At roughly 30 inches tall, it fits under most deck railings and low eaves. This is also our most popular option for customers who want to connect two smaller barrels in different locations rather than one large barrel in a single spot.
- 140 US gallons (530 liters) capacity
- Approximately 48" x 40" x 30" overall
- Same inlet screen, spigot, and overflow as full-height
- Lower center of gravity for improved stability
Rainwater Capacity Calculator
Use this table to estimate how many gallons of rainwater you can collect per inch of rainfall based on your roof catchment area. The formula is simple: Gallons = Roof Area (sq ft) x 0.623 x Rainfall (inches) x 0.90 efficiency factor. The 0.90 factor accounts for losses from splash, evaporation, and first-flush diversion.
| Roof Area (sq ft) | Per 1" Rain | Per Season (30") | Barrels Needed |
|---|---|---|---|
| 200 | 112 gal | 3,362 gal | 1 barrel (will overflow ~88 gal/event) |
| 500 | 280 gal | 8,406 gal | 1-2 barrels (daisy-chain recommended) |
| 1,000 | 561 gal | 16,812 gal | 2-3 barrels |
| 1,500 | 841 gal | 25,218 gal | 3-4 barrels |
| 2,000 | 1,121 gal | 33,624 gal | 4-5 barrels |
Based on 0.90 collection efficiency. "Per Season" assumes 30 inches of rainfall during the Apr-Oct growing season (St. Louis averages approximately 28-32 inches in this period). Actual collection depends on rainfall intensity, gutter condition, and diverter design. One barrel = 275 gallons. You do not need to capture 100% — even one barrel dramatically reduces municipal water use for gardens.
Setup Guide
Choose Your Location
Place the rain barrel on a flat, level surface within 6 feet of a gutter downspout. The surface must support the full weight — a filled 275-gallon barrel weighs approximately 2,425 lbs. A concrete pad, paver patio, or compacted gravel base at least 4 inches thick is ideal. Avoid soft soil, wooden decks (unless rated for the load), and slopes. Position the valve side for easy access to attach a hose.
Connect the Downspout
Cut the gutter downspout at a height that directs water into the screened inlet on top of the IBC. You can use a flexible downspout extension, a rigid PVC elbow, or a commercial downspout diverter. A diverter is the cleanest installation — it redirects water into the barrel when the barrel has capacity and automatically sends overflow back down the original downspout when the barrel is full. Diverters cost $20-40 and install in 15 minutes with a hole saw.
Install the Overflow
Even with a diverter, heavy storms can overfill your barrel. The overflow port (included with every rain barrel we sell) should be connected to a hose that directs excess water away from your foundation — ideally to a garden bed, swale, or storm drain. For daisy-chained systems, connect the overflow of barrel #1 to the inlet of barrel #2 using a short length of 2-inch PVC or flexible hose.
First-Flush Diversion (Optional but Recommended)
The first flush of rainwater from a roof carries the most contaminants — bird droppings, pollen, dust, and roofing material residue. A first-flush diverter is a simple device that captures the first 1-2 gallons per 100 sq ft of roof area and discards it before clean water enters your barrel. This significantly improves water quality for garden use. We sell first-flush diverters as an add-on or you can build one from a 4-inch PVC standpipe with a ball valve drain.
Attach Hose and Test
Screw a garden hose onto the spigot adapter at the bottom of the barrel. Open the valve and verify flow. A full 275-gallon barrel produces approximately 1.0 PSI of pressure at the spigot (based on the 46-inch water column height) — enough for a gentle gravity-fed flow to water a garden, but not enough to run a sprinkler. For pressurized output, add a 12V transfer pump ($40-60) or elevate the barrel on a platform (every 2.31 feet of elevation adds 1 PSI).
Apply UV Protection
If your barrel is in direct sunlight, apply an opaque cover, wrap the bottle in black LDPE film, or spray-paint it with UV-resistant paint. This serves two purposes: it blocks sunlight that promotes algae growth inside the barrel, and it protects the HDPE from UV degradation that causes brittleness over time. A covered barrel will last 8-10+ years outdoors; an uncovered one may only last 3-4 years before the plastic deteriorates.
Maintenance Schedule
A well-maintained rain barrel will provide years of reliable service. Follow this schedule to keep your system running cleanly and efficiently.
| Frequency | Task | Details |
|---|---|---|
| Weekly | Check inlet screen | Remove leaves, debris, and sediment from the mesh screen. Rinse if clogged. |
| Monthly | Inspect for mosquito larvae | Check water surface for larvae or pupae. If found, add a Bti mosquito dunk (lasts 30 days, safe for plants). |
| Monthly | Treat for algae prevention | Add 1/4 teaspoon unscented household bleach per 275 gallons if barrel is not opaque. Alternatively, use a food-grade algaecide tablet. |
| Quarterly | Inspect valve and spigot | Check for drips, test operation. Replace gasket if dripping. Lubricate valve handle pivot with food-grade silicone. |
| Twice per year | Flush sediment | Open the bottom valve fully and drain 5-10 gallons to flush accumulated sediment. Do this at the start and end of the rain collection season. |
| Annually | Full interior cleaning | Drain completely. Scrub interior with a long-handled brush and a solution of 1/4 cup bleach per 5 gallons water. Rinse thoroughly. Inspect bottle for cracks or UV damage. |
| Before winter | Winterize | Drain completely (or install a heating blanket). Disconnect downspout diverter. Leave valve open and cap loose to prevent vacuum. Cover with UV tarp if leaving outdoors. |
Seasonal Tips
Spring (March - May)
Reconnect your downspout diverter and inspect all connections. Run a test fill by pouring 5 gallons of water into the inlet and checking for leaks at the screen, overflow port, and spigot. Clean the inlet screen and replace any gaskets that hardened over winter. Spring is the best time to do your annual interior scrub if you skipped the fall cleaning. In St. Louis, spring rainfall averages 12.5 inches (March-May), which is enough to fill a 275-gallon barrel 6-8 times from a 500 sq ft roof.
Summer (June - August)
Peak demand season. Use stored rainwater for garden irrigation, lawn watering, and outdoor cleaning. A medium-sized vegetable garden (200-400 sq ft) uses 50-100 gallons per week during hot weather. Monitor water levels and use water between storms to maintain capacity for the next rainfall event. If algae appears despite UV protection, increase bleach treatment frequency to every 2 weeks. St. Louis summer rainfall averages 11 inches (June-August), but it arrives in intense bursts — make sure your overflow system is working properly.
Fall (September - November)
Leaf litter is the biggest challenge in fall. Check and clean your inlet screen after every windstorm. Consider installing a gutter guard or leaf filter upstream of your downspout diverter to reduce debris reaching the barrel. Continue using stored water for fall garden crops and yard clean-up. As nighttime temperatures drop below 40°F, begin planning your winterization timeline. Drain the barrel before the first hard freeze (typically late November in St. Louis).
Winter (December - February)
If you drain your barrel for winter, leave the valve open and the cap slightly loose to prevent vacuum and allow moisture to escape. Disconnect the downspout diverter so meltwater does not enter the empty barrel and refreeze. If you choose to keep the barrel connected year-round (for livestock watering or greenhouse use), install a heating blanket with a thermostat set to 38°F. A 1,440W blanket costs approximately $0.50-$1.00 per day to operate in below-freezing weather, depending on insulation and ambient temperature. Combine with an insulation jacket to cut heating costs by 40-60%.
Water Quality Information
Is Harvested Rainwater Safe for Gardens?
Yes. Rainwater is naturally soft (low mineral content) and slightly acidic (pH 5.6-6.2), making it excellent for most plants. It contains no chlorine, fluoride, or water treatment chemicals found in municipal tap water. Many gardeners report better plant growth when switching from tap water to rainwater, particularly for acid-loving plants like blueberries, azaleas, and tomatoes. Rainwater that has been sitting in a clean barrel for up to 30 days is perfectly safe for garden irrigation without any treatment.
Can I Drink Harvested Rainwater?
Harvested rainwater is not considered potable without treatment. Roof runoff can contain bird droppings, pollen, dust, asphalt shingle residue, and airborne pollutants. If you intend to use harvested rainwater for drinking, cooking, or bathing, it must be filtered (at least 1-micron sediment filter + activated carbon) and disinfected (UV sterilizer or chlorination at 2 ppm free chlorine for 30 minutes). First-flush diversion is strongly recommended. Many off-grid homeowners successfully use rainwater as their primary water source with proper multi-stage filtration and testing.
How to Prevent Mosquitoes
Mosquitoes can lay eggs in any standing water accessible to adults. The screened inlet on our rain barrels blocks adult mosquitoes from reaching the water surface. Keep the screen in good condition with no tears or gaps. If you notice larvae despite the screen (they can enter through small gaps or overflow ports), add a Bti mosquito dunk — a biological larvicide that kills mosquito larvae but is harmless to humans, pets, fish, and plants. One dunk treats up to 100 sq ft of water surface for 30 days. For overflow ports, add fine mesh screening to prevent adult mosquito entry.
Roof Material Considerations
The type of roof material affects rainwater quality. Asphalt shingles (the most common residential roofing) are generally safe for garden irrigation but may leach small amounts of petroleum compounds during the first few years after installation. Metal roofs (galvanized steel, aluminum, copper) are the best choice for rainwater harvesting — they shed water cleanly and produce the least contamination. Avoid collecting rainwater from roofs treated with moss killers, pressure-treated wood shake, or older tar-and-gravel roofs, as these can leach harmful chemicals. If in doubt, have your collected rainwater tested by a local lab ($30-50 for a basic panel).
Algae Management
Algae growth requires three things: sunlight, water, and nutrients. Eliminate any one of these and algae cannot grow. The most effective approach is blocking sunlight with an opaque cover or dark-colored wrap on the barrel. If some algae does develop, it is not harmful to plants — garden irrigation water with minor algae is fine. For aesthetic reasons or to prevent clogging of drip irrigation emitters, treat with 1/4 teaspoon of unscented household bleach (8.25% sodium hypochlorite) per 275 gallons every 2-4 weeks. This low concentration will not harm garden plants. Alternatively, use a barley straw bundle (available at garden centers) — it releases a natural compound that inhibits algae growth as it decomposes.
Raised Garden Beds
IBC Planter Beds
IBC totes cut horizontally make excellent raised garden beds. The steel cage provides structure while the HDPE bottle liner retains moisture. Perfect for growing vegetables, herbs, and flowers in limited space. Unlike wooden raised beds that rot within 3-5 years, IBC planter beds are resistant to rot, termites, and soil-borne fungi, and they last 10-15+ years with minimal maintenance.
- Approximately 4' x 4' growing area per half-tank (16 sq ft)
- Soil depth of 12-16 inches (sufficient for most vegetables and herbs)
- Built-in drainage system through drilled holes in the HDPE bottom
- Ergonomic height of 20-24 inches reduces back strain when gardening
- Weather-resistant steel frame lasts 15-20+ years
- HDPE is food-safe and does not leach chemicals into soil
- Can be stacked for multi-level gardens (cage supports stacking)
- Easy to move with a pallet jack or forklift when empty
What to Grow in IBC Planter Beds
IBC Planter Bed Setup Tips
Soil Mix: Use a blend of 60% quality topsoil, 30% compost, and 10% perlite or vermiculite for drainage. A half-IBC planter needs approximately 12-15 cubic feet (8-10 standard 40-lb bags) of soil mix to fill.
Drainage: Drill 8-12 holes (1/2-inch diameter) in the bottom of the HDPE liner before adding soil. For improved drainage, add a 2-inch layer of gravel or broken pot shards at the bottom before the soil.
Watering: Raised beds dry out faster than in-ground gardens because air circulates around all sides. Plan to water 1-2 inches per week. A drip irrigation line connected to your IBC rain barrel is the most water-efficient option — and it turns your two IBC products into a complete self-watering garden system.
Sun Exposure: Place the planter where it receives at least 6-8 hours of direct sunlight per day for vegetable growing. The steel cage can absorb and radiate heat, creating a slightly warmer microclimate that can extend the growing season by 1-2 weeks in spring and fall.
Winter Care: IBC planter beds can stay outdoors year-round. In winter, cover the soil surface with 4-6 inches of mulch (straw, shredded leaves) to protect soil biology and prevent erosion. The HDPE liner and steel cage are unaffected by freeze-thaw cycles.
Other Creative Uses
Ready to Start Harvesting?
Contact us to order a ready-made rain barrel or planter bed, or describe your custom project and we will build it to your specifications. We offer pickup from our St. Louis facility and delivery within 150 miles. Most ready-made rain barrels and planter beds are available within 3-5 business days.