I've been looking after a bonsai Sequoia giganteum for a relative but apparently not doing a very good job, I recently noticed the trees soil was bone dry in the middle and all of its foliage was dead, but still green.
Ive gotten rid of what I think is most of the dead growth, I broke the branches down gradually with my fingers until I reached supple wood again and then trimmed it back slightly from there with some pruning shears.
I've soaked the tree in water for a few hours and made sure so be thoroughly watering it now. I know these should be outside for the winter but I've brought it inside and put it under a 125W Blue Envirolite and fertilised the soil, using 1/2 the manufacturers recommended dilutin (Chempak No eight), is there anything else I can do to try adn save this tree.
Its been under the light and kept well watered for over a week nw but I'm not seeing any signs f new growth even though from what I can tell the wood that is left seems not to be dead, as its still supple and doesnt break off like the branches I removed to begin with did.
Thanks in advance.
it was all dead unfortunately and literally brushed off.