hey marga regarding photos, my cameras are nothing special I had a fujifilm digital compact for about 3 years and it cost £60, I took thousands of images with it, now I have an Olympus around £150, the difference is the amount of photos you need to take in order to get a good one.
its more about setting up a consistent area, system that works, for me I like a darkened room , using the black tent as a background but the plant forward of it as not to reflect light back, then with flash it makes a good photo:
or alternatively there's a super macro setting but it needs strong amounts of ambient light to not blur so near to a hps works well for this.
however I still struggle to find a good photographic environment for full plant shots,
i think you can get some great images without any expensive gear just takes time playing.
cheers!