".........Can I also start hardening off my other tender plants I've been
growing on since the winter ie some pelargoniums and some fuchsia cuttings,
or should I keep them indoors a bit longer?......."

Depends where you are.
Watch out for frost 3 days either side of next Full Moon


--
David Hill
Abacus Nurseries
www.abacus-nurseries.co.uk