Your water lily's leaves begin to get smaller when the days get shorter. I usually stop fertilizing by the end of October, let the lily go dormant for the winter, giving it a better chance for winter survival. Next spring, check the water lily when the leaves reach the top of the water because your lily has probably multiplied and needs dividing. Except for your first year of owning your lily,
you will be dividing it each spring thereafter.
Fertilizing tropical water lilies
Tropical water lily leaves reach the top of the pond in May after being dormant during the colder shorter days of winter. That is when we begin fertilizing. Water lilies are heavy feeders and will love food at least once a month. I have been known to feed every 2 weeks. They like aquatic plant tabs that are simply pushed into the soil with your thumb, one tab per gallon of pot. If you don't have aquatic plant tabs, use tree spikes cut into 4 pieces. Tomato spikes also work well. The only fertilizer I have not tried is a time released one like Osmocote because that is activated by water, so I don't know if it would be released too rapidly to do much good. If you have many water lilies, you may want to stagger the feeding schedule because any fertilizer feeds all water plants, algae included, so you may inadvertently turn your water green with too much fertilizer.
http://www.pondlady.com/Articles/Water_Lillies.htmlCách chỉ dẫn "Repot" xin bạn vào Web :
http://www.bukisa.com/videos/73124_how- ... ter-liliesFertilizer tôi chỉ bạn là loại " Slow release ". Mùa đông không bón cây nhưng nếu dùng loại slow release thì mùa xuân là cây đã có sẵn thức ăn.