Use a weak solution on all new plantings to prevent transplant shock. During main growth spurts feed a weak solution often. For summer pot plants feed every week - their nutrients are quickly leached out due to frequent watering. Feed around the drip lines of trees & shrubs.
Tip- For a weak solution: just cover the bottom of your container (eg. bucket/watering can) to a thumbnail height with seaweed concentrate & fill with water.
Dilution rate 10mls per litre