A glazed pot sits on my back patio with its base parked in a saucer of water. Inside it grows a Venus flytrap and a small pitcher plant, both in full sun all afternoon. The traps snap shut on flies all summer long. So yes, you can grow bog plants in a container, and a container bog garden is one of the easiest ways to start with these plants.
A mini bog garden in a pot beats a full in-ground bed for most people. You control the soil and the water in a small space. You can move it if a spot gets too shady. And you keep these picky plants away from the tap water and rich soil that would kill them in a normal flower bed. A pot also makes winter easier, since you can shift the whole thing to a sheltered wall when hard frost rolls in.
The build is simple once you know the three rules. Pick a container that is at least 8 inches (20 cm) deep and 12 inches (30 cm) wide. Fill it with a mix of 80% peat and 20% sand. Then stand the whole pot in a wide saucer and keep that saucer full of water. That is the entire setup. A glazed ceramic pot or a plastic tub both work well, since neither leaches anything into the mix. One glazed pot or food-safe plastic tub will outlast a dozen seasons.
Size matters more than you would think. Small pots dry out fast, and they are hard to keep evenly wet from top to bottom. A shallow pot can go from soaked to bone dry in a single hot afternoon. A deeper container holds more water and more soil, so the mix stays soggy through the day. The saucer does the rest by wicking water up from below. Keep the saucer about two inches (5 cm) deep and topped up, and you can skip watering for days at a time even in a heat wave.
The peat and sand mix is just as important as the pot. Peat is acidic and holds water like a sponge, which is exactly what bog plants want. The sand keeps the mix from packing down into a dense block, so air still reaches the roots. Never use normal potting soil or compost. Those are full of nutrients that burn carnivorous roots and rot them out.
Use only rainwater or distilled water. The minerals in tap water build up in the mix and slowly poison bog plants. A cheap rain barrel keeps your pot topped up for free.
Water is where most people kill their plants. Tap water has minerals and salts that build up in the peat and slowly poison the roots over a few months. Use only rainwater or distilled water in your pot and saucer. A small rain barrel or a few jugs of distilled water from the store will keep a patio bog supplied all season for almost nothing.
Light is the last piece, and it is not negotiable for most of these plants. Carnivores and the bulk of bog plants need at least six hours of direct sun each day to color up and grow strong. Set your container in the brightest open spot you have. A flytrap in a shady corner goes pale, stretches, and slowly fades, no matter how wet you keep it.
Get the pot deep enough, mix peat with sand, sit it in a saucer of rainwater, and give it full sun. Do those four things and a container bog garden runs itself for years. Mine has held the same flytrap through three winters with nothing more than a refilled saucer.
Read the full article: Bog Plants: 8 Best Picks and Care Guide
