Clay that flakes as it dries and turns to a waterlogged sponge in winter leaves bulbs sitting in water for weeks, where they rot instead of flowering. Dig a hole at least 8 inches deep, line it with gravel and backfill with sandy soil, and almost any bulb will bloom.
Follow our advice and you will be able to see your bulbs bloom even in wet and waterlogged soil:
Bulbs in clay and flooded soil
In this type of soil, clay, what is most damaging to bulbs is that they sit in water for extended periods of time.
They start to rot and thus are not able to develop into a plant that blooms.
Squeeze each bulb before planting: any that feels soft or spongy at the base, or smells sour, should go in the bin rather than the ground.
Planting on a low mound of sandy soil rather than in a hollow keeps the bulb neck above the waterline.
Planting bulbs in clay soil directly
If you increase soil drainage, you should succeed in growing any kind of bulbous plant.
Dig a hole at least 8 inches deep
First, you must dig a deeper hole than you normally would with light soil.
The hole must be at least 8 inches (20 cm) deep.
At the bottom of the hole, spread a layer of gravel or clay pebbles about 2 inches (5 cm) thick.
That will let water drain down and not stagnate at root level anymore.
Atop this first layer, add a second layer of soil mix or garden soil mixed with sand. This layer should also be about 2 inches (5 cm) thick.
If you follow this technique, you’ll be prepared to face any bad weather that might flood your soil.
And you’ll have the great joy of seeing your flowers bloom all over the garden!
Recycle excess soil into raised flower beds
When you do this for a lot of bulbs, you end up with quite a lot of excess soil. Don’t just toss it to the side: build up a raised bed nearby! This will add volume to your lot, giving you more opportunities to play with perspective as you envision different layouts.
In the raised beds, follow the same rules strictly as above, and you’ll effortlessly grow all sorts of bulbs in there, too:
add pebbles or gravel for drainage along the entire bottom of the bed
in the raised portions, use the same mix of garden soil and sand.
Break the excavated clay into crumbs and work in plenty of compost or other organic matter rather than sand, since modest sand additions can set clay into a dense, concrete-like mass.
Fork over the ground where the bed will sit so water carries on draining downwards instead of perching at the join.
Edge the mound with boards or stones to hold a loose sandy mix in place, since unsupported sides can erode in heavy rain, and top up any soil that washes away.
Written by Gaspard Lorthiois | Loves helping out, especially when it comes to growing things. Worked in herbal medicine, runs a farm, and dabbles in tech. Master's degree and engineer.
