How to Plant Water Lilies in a Fish Pond and How to Fix Blackened Leaves

In recent years, many people with fish ponds at home choose to grow water lilies, but many of them do not really know how water lilies in a fish pond should be cultivated. So how do you plant water lilies in a fish pond? What should you do if the leaves turn black?

I. How do you plant water lilies in a fish pond?

1. Choosing materials

?When planting water lilies, choose a bottomless flower tub about 50cm tall with as large a diameter as possible. Place evenly mixed nutrient soil inside the pot, and keep the soil filling depth at 30-40cm to make water storage easier. Bury a well-grown propagule in the center of the tub, at a depth where the growing tip is just slightly exposed above the soil. After planting, add water but do not fill it completely; 2-3cm above the soil layer is best, as this helps raise the temperature and ensures the survival rate. As the plant grows, gradually increase the water level. The advantage of this method is that it is easy to manage; the disadvantage is that overwintering is difficult in the Beijing-Tianjin region, and the plants need to be moved into a greenhouse or sunk into a pond.?

2. Sinking the pot

Choose a bottomless nutrient pot, 30cm tall and 40cm in diameter, and plant it the same way as in a tub with nutrient soil, with the soil filling height at about 25cm. After planting is complete, sink the water lily into the pond, and keep the pond water level just enough to submerge the nutrient pot; then gradually increase the water level as it grows. The advantage of this method is that overwintering is easy: simply raise the water level in winter so that the water lily's growing tip stays below the ice layer, and it can overwinter. The disadvantage is that management requires entering the pond, which is slightly inconvenient.

3. Cultivation

To plant water lilies in a pond, choose a pond with fertile soil and at least 30cm of mud at the bottom. The propagule can be planted directly into the mud. The water level should be shallow at first, kept at 2-3cm to help raise the temperature, and then gradually increased as the plant grows. ?Depending on the region, deepen the water level in the pond before winter so the rhizomes stay below the ice layer and can overwinter. The advantage is a better mass effect and greater growth; the disadvantage is that digging them up the next year is difficult, and pests and diseases are hard to control.

4. Pest prevention

After planting water lilies, prevent damage from pests and diseases. Many aquatic plants with soft leaves suffer damage to leaves and flower stems in summer, causing flower color to change. Their eggs overwinter on Prunus plants, especially on plum and hawthorn trees, and occasionally on cherry trees. Avoid planting large areas of Prunus plants by the water's edge, or wash these host plants with tar in winter. You can also rinse the leaves with a hose and spray insecticides, etc.

II. Why do water lily leaves turn black?

1. Over-fertilizing can reduce or even stop water absorption by the leaves, causing them to turn black and scorch.

2. Infection by pathogens.

3. Insufficient light and excessive dampness.

4. Dirty water or lack of water, etc.

III. What should you do if water lily leaves turn black?

1. If too much fertilizer has been applied, change the water immediately. Note that when changing the water, change only half each time, and keep the water temperature similar. Too great a temperature difference will cause too large a change in the water's pH, affecting the leaves' water absorption. In addition, if there is too much base fertilizer, repot and replace the soil.

2. Leaf diseases can occur during the growing season. Cut off the damaged leaves, and spray with 50% carbendazim at 1000 times dilution, or spray an appropriate amount of pesticide.

3. Increase the duration of sunlight.

4. Changing the water directly can cause changes in water temperature and pH. The correct approach is to add water of the same temperature after the water has evaporated and decreased. Water deficiency during the growing season makes the leaf edges prone to scorching.