How to grow Canna x generalis? A detailed guide to its care

Canna x generalis, also known as red canna, comes in flower colours including creamy white, yellow, orange, pink, bright red and purple-red, with a flowering period from June to October. The dwarf varieties are suitable for growing as potted ornamentals. Such a beautiful flower is one that many people hope to grow themselves. Below, the editors at Boqi Network take you through the care methods for Canna x generalis.

Canna x generalis (detailed introduction)

Canna x generalis loves a sunny, warm climate and is not cold-hardy. It requires fertile, deep, moist, well-drained sandy loam. In the south it can grow all year round with no dormant period. North of the Yangtze River, the stems and leaves wither after frost. At this point, you can first cut the above-ground part off level with the ground, then dig out the rhizomes, dry them in the sun for a few days, and store them buried in dry sand in a cool room at 5-7°C to overwinter. The pile should not be too thick, with 20-25 cm as the limit.

Because the plant is tall, it must be given a sufficient water supply during the growing period. But it fears waterlogging, and water accumulating in the soil easily causes rot, so when planting in the ground choose a spot that faces the sun, is sheltered from the wind and drains well. Because it grows vigorously and its roots can reach about 70 cm deep into the soil, deep soil and fertile texture are important conditions for ensuring good growth and development. Canna x generalis has large flowers and a long flowering period, so it needs plenty of nutrients, and rational fertilisation is the main measure for growing this flower well. Whether planted in the ground or in a pot, sufficient organic fertiliser combining nitrogen and phosphorus must be applied as a base fertiliser before planting.

During growth and flowering, a compound liquid fertiliser needs to be applied as a top dressing several times. After each fertilisation, water and loosen the soil promptly so that the soil is loose, favouring root development so the plant produces many flowers and lush foliage. If fertiliser is insufficient or phosphorus and potassium are lacking, the plant becomes weak, producing only stems and leaves with few or no flowers. After each flowering, promptly cut off the spent flower stalks and apply liquid fertiliser as a top dressing to ensure the nutrients needed for flowering again.

How to grow Canna x generalis

How to grow Canna x generalis, how to care for Canna x generalis

How to grow Canna x generalis? An introduction to how to grow Canna x generalis: Canna x generalis likes a sunny, warm and humid climate and is not very cold-hardy. It is not demanding about soil, but because its roots can reach more than 70 cm into the soil, it prefers deep, moist, well-drained fertile soil. Today we introduce how to grow Canna x generalis, and how to care for Canna x generalis.

How to grow Canna x generalis:

Canna x generalis has rich, brilliant flower colours and a long flowering period (June to October), making it an excellent material for beautifying courtyards, and its dwarf varieties are also suitable for pots. Soil is the foundation of the growth and development of Canna x generalis, and it has a great influence on the root growth, nutrient absorption and above-ground growth and development of the plant. Canna x generalis loves high temperatures; its root system is well developed but shallow-rooted, mostly distributed in the 15 cm to 30 cm surface layer. It is not demanding about soil and prefers slightly acidic, loose, fertile soil, growing best in loose, fertile soil with good drainage and ventilation. When planting, loose soil made by mixing organic fertiliser chicken manure and slightly acidic planting soil is most favourable for root growth and new shoot tillering. Because the roots are rather shallow, the depth of digging over the soil is not critical when planting, at about 15 cm. The planting depth should be such that the soil surface covers the top of the tuber by 2 cm to 3 cm, keeping the plant upright and not easily lodging.

1. Fertilisation

Canna x generalis loves fertiliser, so apply plenty of base fertiliser when planting. Commonly used fertilisers include: loose organic fertiliser chicken manure, peanut cake, urine water, compound fertiliser, phosphate fertiliser and so on. The choice of fertiliser and the timing of application should be decided according to the season and the growth of the plant. Experience has shown that in spring, when the young shoots of Canna x generalis begin to sprout, applying loose organic fertiliser for the first time can effectively loosen the soil, replenish nutrients and maintain moisture, laying a good foundation for later shoot tillering and plant growth. Organic fertiliser based mainly on chicken manure has a long-lasting effect and loosens the soil well, but its effect is slow; at this time, to speed up and strengthen the effect, one application of compound fertiliser and one of urea can be mixed in. Plants that have entered the growth and flowering stage need continuous top dressing because they grow fast and flower heavily. Observations show that applying peanut cake or chicken manure mixed with phosphate fertiliser once every twenty-five days together with loosening the soil gives a better effect. The nutrients it contains are fairly complete, especially with sufficient nitrogen, phosphorus and potassium, which can effectively promote flower growth, deepen flower colour and make the leaves large and glossy green. Its drawback is that the effect is slow and it affects the visiting environment of public green spaces. In the course of our work we solve this by covering the soil after fertilisation. In winter Canna x generalis enters its dormant period, but the climate of the Chaoshan region is warm, and with proper care the flowering period of Canna x generalis can continue so that there are flowers to enjoy all year round. During this period, attention should be paid to supplementing phosphorus and potassium and adding wood ash so as to strengthen the plant's cold resistance.

2. Watering

In the daily management and care of Canna x generalis, how well moisture is controlled directly affects plant quality. Improper watering, whether too dry or too wet, easily causes poor growth and even death of Canna x generalis. So it must be done in the right amount and at the right time, controlled flexibly according to the season and the weather. Throughout the year the number of waterings and the amount of water are always variables, and can only be handled through the observation and rich accumulated experience of the grower.

(1) Spring watering: In spring the temperature rises, Canna x generalis comes out of dormancy, some leaf buds grow normally, and water consumption increases accordingly. For watering time, water once a day.

(2) Summer watering: Summer is exactly the vigorous growth period of Canna x generalis, and water consumption is high, so it needs watering once each morning and evening. By the June plum rain season, water once a day, and drain water promptly when there is heavy rain. In July, appropriately increase the amount of watering, and when necessary spray the leaves with water to lower the temperature and increase humidity. Keep the leaf surface clean and the leaf colour fresh and tender.

(3) Autumn watering: Although the temperature drops in autumn, the air is still very dry and evaporation is great, so watering must also be frequent to keep the soil surface moist. After October, as the temperature drops day by day, the amount of watering should be reduced as appropriate, so that the water content in the stems of the plant decreases and the tissues develop fully, increasing cold resistance.

(4) Winter watering: Entering winter, Canna x generalis grows slowly or even stops growing, and water consumption is extremely low. Water once a day. In winter, watering should be done first when the temperature is high, and watering in sunlight gives the best effect; watering is generally best done at around two o'clock in the afternoon.

3. Pruning and cutting back

If ground-planted Canna x generalis has enough space, it can grow on its own into a well-formed plant. There are many factors affecting normal plant growth, such as yellow or diseased leaves caused by pests and diseases, or part of the plant losing balance because spatial competition prevents it from receiving sunlight, or attacks by cold winter wind, or part of the leaves being scorched by strong sunlight reflected from building walls. During vigorous growth and flowering, new shoots tiller extremely vigorously and the plant easily becomes too dense, so pruning and cutting back are needed to achieve a complete plant shape and full but moderate flowering. Generally, pruning and cutting back are carried out flexibly according to the different seasons and the growth of the plant.

The introduction to how to grow Canna x generalis, and how to care for Canna x generalis, ends here. We believe that after reading it you will have some understanding of Yaofei Wang (chitosan + abamectin). We hope the editors' introduction has been helpful to you.