Leaving aside the forcing bulbs, which is totally different, the main reason you can cram bulbs into pots more closely than in a border, is because you aren't normally leaving them there long term. In open ground, most bulbs will spread and naturalise, and also get much bigger, so they need space. Even then, if a clump of anything gets congested, it benefits them to be divided. In pots, they'll still get bigger, and need splitting, but you wouldn't leave a load of bulbs in a pot without any attention year after year. They should all be planted at the correct depth, regardless of whether it's in pots or in the ground to ensure good growth and flowering. Planting too shallow often prevents that happening with some bulbs.
Leave the foliage on until it’s yellow and dying. As it dies back it feeds the bulb for next year. I also add feed to the water until the leaves begin to turn yellow.
The bulbs are a store of energy that’s been used up to produce flowers this year and has to be built up again.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Leave the foliage on until it’s yellow and dying. As it dies back it feeds the bulb for next year. I also add feed to the water until the leaves begin to turn yellow.
The bulbs are a store of energy that’s been used up to produce flowers this year and has to be built up again.
Ok thanks . Yes.m, I’ve been using tomorite because it’s high % in potash. I learned that potassium is good to promote flowers/fruit.
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Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.