Posted: 30/05/2013 at 18:00
Growmore is not an organic product, it is made of chemicals in a factory - nothing wrong with that, but that is why it smells of nothing. One of the best general fertilisers is pelleted organic chicken manure, my whole garden, pots, hedges and everything else, gets a dose of that around now - often earlier, but everything was so late this year. I use liquid seaweed diluted in a watering can for top ups if needed, and specialist fertiliser for the clematis ans they are such greedy beasts. If your soil is reasonable you shouldn't need much more. Sometimes if it has rained a huge amount and nutrients, in pots especially, are getting leached out, a foliar feed with the seaweed liquid does well. Ericaceous plants sometimes need a jolt of iron feed if they are not in ericaceous soild, either as a feed or a dollop of compost around them that the worms and so will pull into their roots. Baskets and summer bedding appreciates a liquid feed as their plants have to do a great deal of growing and flowering in a very small space in a short time.