When you leave pots here on solid ground, and anything at the base is then subjected to freezing after the wet [a regular occurrence] then yes, they'd be absolutely helpful and probably necessary. I often get plastic pots 'sticking' to the bits of paving because they freeze, and the only paving is in a fairly sheltered spot. My back garden is largely gravel, so most pots are sitting on that, and I use feet [mostly random bits of battens or tiles] when I need to level something, especially near the back steps as there's a small slope.
Just a couple of months ago, I had to lift a 6 inch pot that I'd stuck a mix of bulbs into from a border I'd removed. The pot soil had nearly an inch of water sitting on it - December was one of our wettest on record. It was relatively decent soil - a mix of garden and some spent compost, but the pot had been on non gravelled ground so drainage wasn't happening sufficiently. Pots freezing and breaking is a regular occurrence where I am. Even the hefty ones I use for sweet peas etc have cracks. I've sealed them and it definitely helps. It's just how it is though. There's certainly no harm in using them, but you also need to have a suitable mix for the plants that are in them, and as always - your climate will dictate
It's a place where beautiful isn't enough of a word....
I live in west central Scotland - not where that photo is...
I find they keep ants out of very large containers. That's the reason I use them. If I can find a big enough 'saucer ' ( usually an old frying pan or wok) I use that.
That's why I use them too, and not only on very large containers. I find than virtually every pot in garden, for some reason with the exception of the hostas, is invaded by ants if they aren't raised off the ground.
I did also have a problem with the tap root of an acer drilling down through the gravel its pot was stood on. I nearly killed myself trying to raise the pot high enough to cut that root.
I never use them, just slide a bit of slate or crock underneath to level the pot if needed. I have started using bits of broken tile to lift them up slightly, though, but more to reduce the brown rings they leave behind on the paving when moved after a long time in one spot!
"What is hateful to you, do not do to your neighbour".
The only time I've ever regretted not using pot feet was with my terracotta bird bath. It's glazed and this year in the long, very cold spell it cracked around the base. After I lifted it up onto feet it didn't crack again. But apart from that, I'm dubious... I usually use them to increase drainage for plants that like drier feet.
I use pot feet to raise the few pots I have off my paving and patio to avoid those unsightly ring marks and also because I like to see water running out when l’m watering so that I know that the pot is well hydrated and to stop! For any pots on uneven ground I use small stones or cuts of bamboo cane to make sure the pots are level, otherwise it’s a bit like have a picture askew on a wall indoors - not good!
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Just a couple of months ago, I had to lift a 6 inch pot that I'd stuck a mix of bulbs into from a border I'd removed. The pot soil had nearly an inch of water sitting on it - December was one of our wettest on record. It was relatively decent soil - a mix of garden and some spent compost, but the pot had been on non gravelled ground so drainage wasn't happening sufficiently.
Pots freezing and breaking is a regular occurrence where I am. Even the hefty ones I use for sweet peas etc have cracks. I've sealed them and it definitely helps. It's just how it is though. There's certainly no harm in using them, but you also need to have a suitable mix for the plants that are in them, and as always - your climate will dictate
I live in west central Scotland - not where that photo is...