I have this little garden behind my house...can't remember planting this but it's growing very fine...

The last two are the same: Bryophyllum pinnatum

drake2:
The last two are the same: Bryophyllum pinnatum

wow thanks....didnt know that....it's very medicinal....also called Leaf of life....how about the first two....anybody knows?

The last 2 (the Brophyllum) is more commonly known as a Kalanchoe plant. That's what gardeners call them here.

Maafiaalady:
wow thanks....didnt know that....it's very medicinal....also called Leaf of life....how about the first two....anybody knows?

It is also called: "Resurrection plant"

Very good for convulsive patients.

Pictures of the first two, not really detailed; u need to provide more descriptive features. plants do look very similar. If the first plant has spiky leaves, it maybe: Acanthus Montana