Article courtesy of the Phoenix Bonsai Society.
The second growing season of the year has begun.
Again, don't let your plants get out of control, particularly the faster growers like junipers, elms, and pomegranates. Keep new growth pinched after it gets only so long.
We cannot stress this enough: Be aware of the water-retention of each pot of soil mix.
Give a high phosphate fertilizer, such as a 10-60-10 blend, to your post-bloom flowering trees to build up reserves and rudimentary buds for next spring. This is also recommended for pines and junipers now. These latter two kinds of plants also can be best wired in the Autumn and the wire left on -- with constant visual checking for too-quick growth that might scar -- until the following Autumn.