@msqingxiao, I bought some perennial plug plants from https://southeasternhorticultural.co.uk/ and potted those into 9 cm pots. they grew and became 9cm plants over time. I found them all to be healthy and nicely growing. I didnt need more but I wish I had known about it earlier. I had paid a lot more to garden centers and online for 9cm plants.
If you are not in hurry, getting plug plants from them and growing on would be a good option.
Just chiming in to say that I bought plugs from South Eastern horticultural after hearing about them here. The plants came quickly, in excellent condition and bigger than expected. I would totally recommend them. I bought Salvias, Geums and Japanese anemones all about £1 each.
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If you are not in hurry, getting plug plants from them and growing on would be a good option.
The plants came quickly, in excellent condition and bigger than expected. I would totally recommend them. I bought Salvias, Geums and Japanese anemones all about £1 each.