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My daughters bonsai has lost colour and the spikes are dry.. the plant has been watered regularly and not really dried out to my knowledge but got like this after the heat wave here in Aus of 40 degree heat and I am concerned it may have got burned or from the hot days ..
The branches seem ok.. Can someone advise me , should we cut it back and let it regrow new foliage? we are hoping its not dying?? its not exactly brown but dry and spikey.. and faded looking.. any advice or comments be muchly appreciated thankyou

The best advice right now is a picture please. How big is the tree? What species is it? It does sound as if the heat and/or sun has affected it. It may be ok, I would keep it watered and in a shady spot, and it may come back. Pruning my not help, I would only remove any bits that are dead. If we can see a picture it would help,
Geoff.