FEBRUARY : Time to begin planning and preparing for Spring and sorting pots ready for which bonsai trees you will be repotting this year. Some trees will need large pots, some deep, some with different shapes etc, remember to think ahead as to when in full leaf.
This is an ideal time to collect loam, pine needle mould, sand or grit and peat in preparation for repotting. As a general guide mix together 30% loam, 30% sharp sand or grit and 40% pine needle mould or coarse Irish moss peat, mix together with a small amount of bone meal fertilizer. This gives a good open mix, so essential for the health of bonsai. If any tree is noted that there is any trace element deficiency this could easily be overcome with regular feeding if you cannot collect your loam use John Innes No. 2, but first sieve out the small dust.
February is also a good time to give a little feed of Seaweed and Tomato to your pines. If the weather is suitable and not below freezing for too long then repotting can take place for hardy trees