Read at : NGA – Regional Gardening News
The frequent watering required for container plants also leaches nutrients out of the soil quickly. Organic or slow-release fertilizers are good for pots, as they release their nutrients slowly over time, reducing the chance of root burn. Water thoroughly after application, allowing water to run out drainage holes. Empty any water that collects in saucers. It will be high in salts, which when reabsorbed, can burn roots.