guava wanted

[ashley]

Rob,

Have you tried privet (Ligustrum), particularly softer young growth?  In the dim and distant past I raised several generations of stick insects (species unknown) on this without problems.  It also had the advantage of being plentiful in suburbia!

Sorry Rob, you were asking about leaves rather than sticks

[Anthony Darby]

There are only a couple of species of stick insects (including the "laboratory" or Indian stick insect Carausius morosus) that feed on privet, one species on fern, one on rhododendron and the rest (100+ spp.) are best on bramble in the UK.