It's about the same here in CA where I live and we grow greens all year here. Temps range anywhere in the 40-60's here. Winter seems to be the best time to grow greens because they aren't bothered by pest.
I found this list a while back and I think I'm going to try and grow these weeds this summer for my dragon and some for myself :wink:
I have compiled a list of weeds, wild plants and garden plants that Bearded dragons can safely eat. It has taken some time to cross reference them with those found in Australia, and weeds that are poisonous and those that can be found easily in any area. If anyone is interested in trying their dragon on this diet and needs a picture to identify any weeds I will do my best to help. Also if there is any weed you are not sure of, take a photo and I will try and tell you if it is the correct plant.
Cleavers. Known as Sticky weed
Mallow, leaves and flowers
Knapweed
Blackberry
Dogrose
Bindweed
Honey suckle flower
Ox eye Daisy
Sow thistle
Dahlia
Pineapple weed
Chickweed
Gazinea
Verbena (garden only, not shrub type)
Saxifrage
White clover
Red clover
Alslike clover
Crimson Clover
Chicory
Hedge mustard
Garlic mustard
Evening primrose (not primula)
Plantain, ribwort and slender
Lemon Myrtle
Nasturtium
Nettle
Smooth sow thistle
There are many more edible plants but these are the ones that are found in Australia. I have not tried all of them on Cosmo but I have tried many of them. I also feed these to my tortoise and so do many other people. If you would like to try growing your own weeds you can buy organic seeds on ebay. If you grow them in a mix of topsoil and limestone flour they will be calcium enriched. It is recommended that all weeds fed to any animal should be grown in compost free soil and if collected wild they should not be from an area that could have been sprayed for weeds or pests. The best part of growing or feeding weeds is it is more natural and cheaper too. There are less oxalate's in the weeds. Oxalate's are found in greens, rocket etc and this binds to calcium and inhibits the body from using it.
If you want to try a more natural diet for your beardie I would suggest you try one weed at a time until he gets used to it. A good one to start with would be smooth sow thistle, Cosmo loves it and so do most tortoises.