There are a couple methods that can spark interest in greens. One being to drop the green from about a foot or higher up, when it hits the enclosure floor/bowl it gives the dragon an impression it is moving. Another thing to try is to add some honeydew or strawberries in moderation to the salad or another fruit/melon that the dragon likes to eat. Some also include feeder worms such as butterworms/silkworms/reptiworm in the salad. Generally though the dragon has perfect aim and will just pick out the feeders. Some dragon just do not really eat salad when they are under a year old, as they get older and go through their switch they tend to eat more greens/veggies.
The best tip I can offer you would be: get a good UV source from the start. Reptisun 10.0 linear tube that will span 2/3 - 3/4 of the enclosure length. Also do not use any red colored bulbs. You can save money by using vivid/natural daylight colored household bulbs. Also when measuring temperature and humidity the best option is to get an Acurite digital thermometer x2 and hygrometer. It gets placed in the cool side of the enclosure and the probe gets placed right in the basking spot. If the setup is correct from the beginning the dragons chance for having relocation stress is lower and or less stressful. When feeding him feeders, choose a varied diet over one consistent feeder. There should be a staple feeder and then 1-2 other feeders everyday. This will ensure better nutrition as not all feeders have the same nutrition. :wink:
I hope this has helped some.
Great tip by Brandon there.