How to grow Catalpa? A detailed guide to Catalpa cultivation methods

1. Catalpa basic cultivation knowledge

Growing soil: deep, fertile, moist soil.

Humidity requirement: humidity should be kept between 68-79%.

Temperature requirement: an environment with an average annual temperature of 10-15°C.

Light requirement: ample sunlight.

2. Watering

Catalpa has very strict water requirements, which must be given attention in daily care. For seedlings planted in spring, first water the first three waterings well, then water twice thoroughly in May, June, September, and October; in July and August, if it is not drought, you can skip watering; in December, water enough and thoroughly. By early spring of the second year, promptly water the green-up water, water twice thoroughly from April to October, and still water enough and thoroughly in early December. In the third year, water according to the method for the second year. In the fourth year, apart from watering the green-up water in early spring and the freeze-proof water in early December, there is no need to water at other times, and it can grow entirely on natural rainfall; only when the weather is too dry should a small amount of water be given.

3. Fertilizing

In addition to applying enough base fertilizer at the time of planting; fertilizer should also be applied once around December each year; in early May, apply some urea; in late July, apply some phosphorus and potassium fertilizer.

4. Pruning

Catalpa has strong sprouting ability, and during the growing season, the trunk often sends out new shoots. To avoid consuming too many nutrients, they should be pruned and removed in time. Usually, the drooping branches, crossing branches, overly dense branches, diseased and pest-infested branches, and dry and withered branches of Catalpa should be pruned.

Do these four points well, and Catalpa will be full of vitality and fragrance. So, how is such a lushly growing Catalpa under careful cultivation propagated? The editor will now tell everyone.

Catalpa cultivation methods and precautions

Planting Catalpa

Catalpa can be planted in spring and autumn. Before planting, dig the planting hole well. In addition, planting with a soil ball can increase the survival rate, but also be careful not to plant too deep, as too deep will cause the plant to suffer from suppressed buds. When planting, some decomposed base fertilizer should also be applied and mixed evenly with the planting soil. After planting, water once with the first watering, then water once each after three days and five days.

Water and fertilizer management for Catalpa

In daily care, attention should be paid to water management for Catalpa. In addition to the first three waterings after planting, two thorough waterings should also be chosen between May and October. When there is more rainfall in summer, if it is not too dry, watering is not needed, and freeze-proof water should also be applied well in winter. After the plant is four years old, it is enough to water the green-up water and freeze-proof water well. In addition, Catalpa likes fertilizer. Apply enough base fertilizer when planting, and some urea can be applied in May, which can make the plant's branches and leaves lush and accelerate growth.

Shaping and pruning Catalpa

Because Catalpa has strong sprouting ability, it tolerates pruning. In spring, when new branches reach about 30 cm, select suitable main branches and cut off the extra branches. During the growing season, newly sprouted buds should also be wiped off. If you want to expand the crown, you need to shorten the main branches and retain outer buds.

Precautions for Catalpa cultivation

Catalpa is also easily threatened by diseases and pests. Common pests include Peribalus lewisi, Lymantria monacha, Basilepta fulvipes, and Omphisa plagialis, all of which can be controlled by spraying insecticidal preparations. In addition, a common disease of Catalpa is anthracnose, which is prone to occur under high temperature and poor ventilation. Therefore, in addition to spraying pesticides, attention should also be paid to water and fertilizer management for Catalpa to improve the plant's disease resistance.

Catalpa cultivation methods and precautions, how to grow Catalpa

Introduction from the Flower and Bonsai Network. Today the editor of the Flower and Bonsai Network will share with everyone an article on Catalpa cultivation methods and precautions, how to grow Catalpa. Flower friends who like growing Catalpa, come and take a look.

Catalpa has many uses, such as ornamental value and ecological value. So how exactly should we cultivate Catalpa? And what precautions are there during cultivation?

Planting Catalpa

Catalpa can be planted in spring and autumn. Before planting, dig the planting hole well. In addition, planting with a soil ball can increase the survival rate, but also be careful not to plant too deep, as too deep will cause the plant to suffer from suppressed buds. When planting, some decomposed base fertilizer should also be applied and mixed evenly with the planting soil. After planting, water once with the first watering, then water once each after three days and five days.

Water and fertilizer management for Catalpa

In daily care, attention should be paid to water management for Catalpa. In addition to the first three waterings after planting, two thorough waterings should also be chosen between May and October. When there is more rainfall in summer, if it is not too dry, watering is not needed, and freeze-proof water should also be applied well in winter. After the plant is four years old, it is enough to water the green-up water and freeze-proof water well. In addition, Catalpa likes fertilizer. Apply enough base fertilizer when planting, and some urea can be applied in May, which can make the plant's branches and leaves lush and accelerate growth.

Shaping and pruning Catalpa

Because Catalpa has strong sprouting ability, it tolerates pruning. In spring, when new branches reach about 30 cm, select suitable main branches and cut off the extra branches. During the growing season, newly sprouted buds should also be wiped off. If you want to expand the crown, you need to shorten the main branches and retain outer buds.

Precautions for Catalpa cultivation

Catalpa is also easily threatened by diseases and pests. Common pests include Peribalus lewisi, Lymantria monacha, Basilepta fulvipes, and Omphisa plagialis, all of which can be controlled by spraying insecticidal preparations. In addition, a common disease of Catalpa is anthracnose, which is prone to occur under high temperature and poor ventilation. Therefore, in addition to spraying pesticides, attention should also be paid to water and fertilizer management for Catalpa to improve the plant's disease resistance.

How to prune Catalpa

Catalpa is a highly ornamental plant with a long lifespan and strong adaptability. So how should we prune it to maintain its vitality so that it survives longer? Now let the editor introduce Catalpa pruning methods to everyone:

Pruning Catalpa in spring

Catalpa sprouts new branches in spring. When the new branches grow to about 30 cm, you can choose branches near the top, then select strong-growing branches distributed on different growth trajectories as main branches, and then cut off all the remaining branches. In addition, during the growing season of Catalpa, its trunk will also send out buds, which should be wiped off in time, otherwise they will consume too many nutrients and affect growth. By the second spring, it is enough to further screen the new small branches on the main branches and retain two new branches.

Pruning Catalpa in autumn

The new branches of Catalpa grow very fast. After leaf fall in late autumn, the previously retained main branches should be moderately shortened, retaining 40-60 cm, and then a certain number of outer buds should be retained. Otherwise, the crown of Catalpa will become narrow and small, and the shading area will also be small. Therefore, if you want to expand the crown, you must pay attention to retaining a certain number of outer buds. In late autumn of the second year, moderately shorten them again, retain outer buds, and after that the tree shape will gradually form.

Pruning during Catalpa care

Therefore, since Catalpa tolerates pruning and has strong sprouting ability, spring and autumn pruning should be done well in daily care. This can reduce the pruning burden for the coming spring and autumn, and in future care it is only necessary to prune crossing branches, overly dense branches, and diseased and pest-infested branches.

The above are the pruning methods for Catalpa. As long as you grasp certain pruning methods, there is no need to worry about Catalpa's growth.

Catalpa propagation methods

Catalpa has a strong air purification ability and is also highly ornamental, but Catalpa propagation is relatively complicated. So now let the editor introduce Catalpa propagation methods to everyone:

Catalpa propagation by seeding

For propagation by seeding, the first important thing is seed collection. Seeds should be collected from old Catalpa trees over 20 years old, then dried in the sun and stored. Next is soaking the seeds. Before sowing, soak them in warm water at about 30°C for 4 hours, then dry them, then mix the seeds evenly with wet sand and wait for sprouting. During this period, water regularly and turn them so that the inner and outer humidity is even. Once the seeds open, they can be sown.

Catalpa propagation by grafting

Catalpa grafting can be done in winter or spring. Bud grafting can be chosen in spring or late autumn. In winter, it can be grafted indoors and then stored in wet sand, and planted in early spring. Grafting around Qingming is best. Grafting while covering with soil gives a higher survival rate. In addition, the cleft grafting method can be used, that is, prepare the needed scion and rootstock, align their cambium layers, bind them with hemp rope and plastic rope, and seal them with wet soil. They can sprout in about 10 days.

Catalpa propagation by root burial

Catalpa propagation by root burial can be chosen in late March. From well-growing Catalpa trees, select root strips 1-2 cm thick and 12-20 cm long. The cut should be smooth. Bury them diagonally into the soil. When burying the roots, press the surrounding soil firmly to make it compact, then water thoroughly.

Catalpa propagation by the flat burial method

Flat burial, as the name suggests, is to place the root strips flat into the soil and make the soil compact. After burying, they can sprout in about 20 days. After that, remove the tillers, keeping only one well-growing branch on each.