Is calla lily suitable for deep pots or shallow pots?
As an elegant aquatic ornamental plant, the potted selection of calla lily directly affects its growth status. Many gardening enthusiasts are often confused by the combination of depth and size of pots. This article will systematically analyze the scientific basis for selecting flowerpots based on plant characteristics. Dialectical selection of deep pots and shallow pots Analysis of pot depth and principle of calla lily is originally born in a swamp environment, and its root system has the characteristics of being wet and afraid of drought. Deep basins can form stable water storage layers, simulate the native wetland environment, and effectively delay the rate of water evaporation. Experimental data shows that using a 30-cm deep pot compared with a 15-cm shallow pot, the soil moisture content can be maintained for 3-5 days longer. Humidity management is required during the growing period (April to September). The deep basin can store about 2 L of water. Combined with the matrix formula of peat soil + vermiculite (3:1), an ideal humid microenvironment can be formed. It is recommended to set a 3cm ceramsite drainage layer on the bottom of the basin to not only retain water but also prevent stagnant water and root rot. It is recommended to use a veg-fired pottery basin with a diameter of 25cm× a height of 35cm for soil substrate adaptation. Its microporous structure can promote air exchange. Deep pots combined with cultured soil with humus content>30% can stabilize the pH value in the ideal range of 6.0-6.5. Advanced Guide for Flower Pot Specifications Standard for Pot Selection during Seedling Period Use a pot with a diameter of 15cm× a height of 20cm for initial planting to ensure that the root system has 5 cm expansion space. When the spread of new leaves exceeds 1.5 times the diameter of the basin mouth, the basin needs to be replaced. Adult plant pot parameters Mature plants require pots with a diameter of 30-40cm and a height of more than 45cm. The ratio of petiole height to pot depth should be 2:1. For example, 80cm petiole corresponds to 40cm pot depth to ensure plant stability. The management of basin replacement cycle recommends that the basin be replaced every two years in the spring, and the diameter of the new basin is 5-8cm larger than that of the old basin. When changing pots, keep 1/3 of the original soil and add bone meal as base fertilizer to reduce the stress response to transplantation. Special scenario response plan: Tips for using high pots For varieties with tall poles above 1.2 meters, it is recommended to use stepped pots: the bottom 30cm is a water storage layer, the middle 20cm planting layer, and the top 10cm breathable layer. Can be paired with bamboo support frames to prevent lodging.
Through scientific selection of pots, regular pot rotation (rotating 45° per week) and frequent application of thin fertilizer (twice a month), calla lilies can maintain the ornamental effect of blooming for more than 200 days a year. Remember the twelve words of "deep pots to preserve water, large pots to nourish roots, and high pots to consolidate the foundation" to create an ideal microenvironment for calla lily growth.