I've been trying to disentangle these. I've always treated onions commercially marketed as spring onions - White Lisbon, North Holland Blood Red etc - as annuals.
In an attempt to create a patch of self-perpetuating onions I've bought seed of Welsh onion, Welsh Red onion and Japanese bunching onion. I'm wondering whether these are in fact identical, apart presumably from the redness in the Welsh Red, and whether they are also the same as the spring onions I've been growing all along? They all seem to carry the same Latin name of Allium fistulosum.
In an attempt to create a patch of self-perpetuating onions I've bought seed of Welsh onion, Welsh Red onion and Japanese bunching onion. I'm wondering whether these are in fact identical, apart presumably from the redness in the Welsh Red, and whether they are also the same as the spring onions I've been growing all along? They all seem to carry the same Latin name of Allium fistulosum.
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