dahlias

still talking about dahlias for cutting how close would you plant and I also thought about planting next wire netting so I can tie the plants to the wire when they get tall save them falling over in the wind save using  canes like  I usually use

also gladioli I planted the bulbs last year in a razed bed although the flowered ok they wasn't the best results so again the same method open ground up wire netting tie the plants to the wire to stop them falling over and I usually plant the gladioli bulbs in pots when established take them out of the pots and plant in the ground but I was thinking about planting the gladioli in the pots in the ground pots and all so it would make it easy to lift the bulbs after flowering would this be possible any advise much appreciated