Your potted garden plants may need a little stronger plant fertilizer than your indoor plants. All-round garden plant fertilizer should help your outdoor plants to grow and stay healthy. The nutrition ratio for fertilizers can vary between different producers, here is one example:
8% Nitrogen (N)
1% Phosphorus (P)
5% Potassium (K)
The rest of the fertilizer consists of other macro- and micronutrients, like Calcium, Magnesium and sulfur.
Nitrogen (N) - gives good growth and fresh green leaves Phosphorus (P) - promotes good budding and rich flowering Potassium (K) - helps the plant build strong stems and a strong root system