A detailed guide to growing campanula: even beginners can get the hang of it easily

Choosing the time:

In spring or late winter to early spring, sow seeds in a plastic tunnel to keep them warm, so that the flowering period avoids the heat of summer. You can also sow in autumn; generally, seedlings sown in autumn of the same year need to be grown until the following spring and summer before they bloom.

Choosing the seeds:

Campanula seeds are extremely small. This means we should try to choose relatively plump, round seeds to improve the success rate of sowing. In addition, check whether they have been affected by pests or diseases.

Choosing the substrate:

The first thing to consider is whether drainage is good. We can choose a porous substrate; this kind of substrate has fairly good drainage. Next is nutrients: if they are rich, it can both improve the survival rate and reduce the burden of fertilizing later. Then there is pH: adjusting the pH to around 5.5 is better and more conducive to the healthy growth of young plants.

Sowing and handling:

As we said above, its seeds are very small, so we can directly use the broadcast sowing method. Gently scatter the seeds on top of the soil without covering them with another layer of soil. After sowing, we need to pay attention to controlling the surrounding environment. First is temperature: the optimal temperature range is 20 to 22°C. Next is moisture: it cannot be too dry, nor in an excessively wet state; keeping the soil slightly moist is enough. In addition, pay attention to sunlight. After sowing, shade appropriately; they must not be exposed to direct strong sunlight. In this way, they will germinate in 14 to 18 days.

Later care:

This refers to care after germination. The soil moisture should be appropriately reduced, which can prevent them from becoming leggy. In addition, some light can be given appropriately.

Conclusion: Have you all learned the campanula growing method? For more campanula-related content, you can follow Four Seasons Plant Network; we will continue to update wonderful campanula-related content!

Campanula growing methods

Campanula is also called bellflower, named because its flowers resemble wind chimes. There are currently more than 200 species, such as Campanula zoysii and Campanula punctata, and it is suitable for growing in the northern temperate zone. It is more commonly seen in Europe, where plants are cultivated for ornamental purposes. Its branches are sturdy, its stems are slender and creeping, and its leaves are alternate; the basal leaves are generally rosette-shaped. Individual flowers form umbel-like or panicle inflorescences, and the flower colors are mainly blue, white, and so on, fresh and elegant.

How to grow campanula

Propagation: Note that the method is sowing. The small, smooth, oval seeds should be dried in advance and stored well, then sown in late winter to early spring, preferably in a warm plastic tunnel, which can avoid the high-temperature period. The prepared sowing soil surface should be flat; after watering fully, sow the seeds evenly. The soil should be thin, seedlings should be watered appropriately, and after they develop, apply compound fertilizer. Generally, once they grow to about 10 cm, they can be transplanted or planted in place. Of course, they can also be sown immediately after maturing, and they will bloom the next year; if sown in autumn, their flowers usually do not appear until the third year.

Soil: The soil pH should be between 5.5-6.0, loose, nutrient-rich, and easy to drain, with a porous substrate, clay accounting for 20-30%, containing iron chelate, and applying 1-1.5 kg of complete balanced fertilizer per 1 m3.

Watering: Before the radicle emerges, ensure sufficient water and maintain a high humidity level, while keeping the soil moist accordingly. If possible, add a layer of coarse vermiculite on the newly emerged seedlings to ensure moisture does not escape. In addition, under normal conditions, the soil can be slightly drier between waterings.

Temperature: The normal temperature suitable for growth is 13-18°C. In winter climates without frost, the temperature can be 3-5°C; when growing outdoors, insulation is needed. In spring, grow for 5-9 weeks at 15-18°C; at 13-15°C, the growing period will be increased.

Sunlight: It likes long periods of light. With 14 hours of daily light, it will bloom naturally. If you need to advance the flowering time, you can regulate it by breaking the dark period for 4 hours over 30 days.

Fertilizing: Once a week, alternately apply nitrogen fertilizer and potassium balanced fertilizer at a concentration of 150-200 ppm in a 1:1.5 ratio. To accelerate seedling growth, you can apply calcium nitrogen fertilizer at 30-50 ppm, then apply calcium fertilizer. The plants need to be given 0.025% magnesium sulfide and iron chelate 1-2 times to ensure these trace elements. Note that no fertilizing should be done after mid-September.

Pests and diseases: It is prone to powdery mildew, rust, and leaf spot, which can be eliminated by spraying 50% carbendazim wettable powder diluted 1500 times. During the growing period, the plants will be harmed by thrips and aphids, which can be removed by spraying 40% omethoate emulsifiable concentrate diluted 1500 times.

Pruning: The plants do not need regulation or pinching during growth. At first, the shape may not be neat enough, but in later growth it will adjust naturally, so there is no need for pruning.

How to grow campanula, campanula growing methods

Campanula likes a climate that is cool in summer and mild in winter. Note that overwintering requires prevention of cold, and a low-temperature greenhouse is needed.

For campanula's soil requirements, the soil pH should be between 5.5-6.0, and it should be loose, nutrient-rich, and easy to drain, with a porous substrate, clay accounting for 20-30%, containing iron chelate, and applying 1-1.5 kg of complete balanced fertilizer per 1 m3.

Campanula likes long periods of light. With 14 hours of daily light, it will bloom naturally. If you need to advance the flowering time, you can regulate it by breaking the dark period for 4 hours over 30 days.

Before the radicle emerges, ensure sufficient water and maintain a high humidity level, while keeping the soil moist accordingly. If possible, add a layer of coarse vermiculite on the newly emerged seedlings to ensure moisture does not escape. In addition, under normal conditions, the soil can be slightly drier between waterings.

The normal temperature suitable for campanula growth is 13-18°C. In winter climates without frost, the temperature can be 3-5°C; when growing outdoors, insulation is needed. In spring, grow for 5-9 weeks at 15-18°C; at 13-15°C, the growing period will be increased.

Campanula fertilization ratio: once a week, alternately apply nitrogen fertilizer and potassium balanced fertilizer at a concentration of 150-200 ppm in a 1:1.5 ratio. To accelerate seedling growth, you can apply calcium nitrogen fertilizer at 30-50 ppm, then apply calcium fertilizer. The plants need to be given 0.025% magnesium sulfide and iron chelate 1-2 times to ensure these trace elements. Note that no fertilizing should be done after mid-September.

Campanula is very prone to powdery mildew, rust, and leaf spot, which can be eliminated by spraying 50% carbendazim wettable powder diluted 1500 times.