I see no obvious problems with your blueberries. The leaves that are visible look reasonably healthy, as do the canes themselves. Did the branches that concern you ever leaf out? If not, then the bushes are probably just balancing the top growth with what the roots can support at this point. The added stress of allowing them to fruit the first year after planting might also be limiting growth. How are you fertilizing them? Is the soil pH where it should be (under 5.5 or so)? Also, although it sounds like they have plenty of water right now, be sure to be very attentive to water through the summer. Blueberries need consistently moist (but not waterlogged) soil in order to thrive, especially when they're first getting established. This post was edited by shazaam on Fri, Jul 4, 14 at 13:20

This definitely looks like Greasy Spot. This is a fungal disease that can happen and can easily be treated. Your citrus tree is not a "disease spreader", but you do need to take care of it :-) Be sure you're fertilizing regularly, and if it is an Improved Meyer lemon, it will need a little extra helping. They can be VERY prolific producers of fruit when they're healthy, so let's work on getting your tree back to optimum health. Just contact your local garden center or ag agent for appropriate fungicides to treat. I believe this is very easy to treat if you stay on top of things. Here is a link that might be useful: Greasy Spot

The 5th edition of 'Australian Native Plants' by Wrigley and Fagg, advises that Adenanthos sericeus is unreliable on the humid east coast. I tried to grow one a year or so ago, did all the right things, but it died in late summer. I should point out that although summer temperatures here are a little cooler than in Sydney, we do experience mists at this time of year and, the combination of warmth and moisture isn't good for those plants which prefer drier surroundings. I really should have known better.

Looks like one of the root rots, probably fusarium. It is a major problem some years for me. Plant begins wilting , then dies. Something I have to live with as it is sporadic. No cures that I know of. https://www.ces.ncsu.edu/depts/pp/notes/oldnotes/vg7.htm