How to grow French marigold? Detailed care methods and tips

The care of French marigold is divided into 4 aspects: light regulation, temperature control, water and fertilizer management, and crossbreeding management.

(1) Light regulation: French marigold is a sun-loving plant, and both growth and flowering require ample sunlight; sufficient light also helps prevent the plant from becoming leggy. In hot seasons, direct sunlight should be avoided, and shade and cooling are needed around midday.

(2) Temperature control: After potting, the temperature can be lowered to 18°C; after a few weeks it can drop to 15°C, and before and after flowering it can go as low as 12-14°C. This temperature is ideal for forming a good plant shape, but in actual production it may be difficult to achieve these conditions. Therefore, generally speaking, as long as it is above 5°C there will be no frost damage, and it can grow well between 10-30°C.

Water and fertilizer

Water and fertilizer are very important for French marigold. When watering, you need to make sure the soil was dry beforehand, and then water thoroughly, but be careful not to let it get too dry. For fertilizing, generally once every 7-10 days is enough, but in the low-temperature winter season, fertilizing should be reduced. Generally, when planting out, some base fertilizer should be applied first, and if the soil fertility is insufficient, additional topdressing is needed.

Potting

Generally, French marigold seedlings need to be potted when they grow 2-3 leaves. When potting, a flower pot with a diameter of 10-15 cm can be used, and after potting, repotting is basically not needed.

Pests and diseases

The common disease of French marigold is root rot, which can be controlled by drenching the roots with thiophanate-methyl. The main pest is spider mites.

Propagation

French marigold is generally propagated by sowing and cuttings. Sowing is done between November and March. Cuttings propagation can be done between June and August.

Propagation methods of French marigold

Sowing propagation of French marigold

Sowing is a commonly used method when propagating French marigold. When sowing, this is generally done between November and March; in warmer climates, sowing can be done all year round. When sowing, direct sowing can be used, or indoor pot sowing.

Collect the French marigold seeds separately. When sowing, you can sow directly, or use relatively loose soil as a seedbed for sowing. After disinfecting the sowing medium, sow the seeds, and cover them lightly with vermiculite or similar. Keep the germination temperature between 22°C and 24°C, and they will generally germinate in one week. After sowing, once they have grown for about one month, they can be transplanted into pots.

In addition, it can also self-sow. French marigold has strong vitality. Generally, if the seeds are not collected in time and fall to the ground, under suitable temperature and humidity conditions, it can grow on its own.

Cuttings propagation of French marigold

Besides sowing propagation, French marigold can also be propagated by cuttings.

The time for taking French marigold cuttings is mainly in summer and autumn, with June to August being best. Generally when taking cuttings, you can remove the tender shoots of French marigold, about 10 cm long, and insert them into flower pots, or directly into the ground. After cutting, shading is needed; the survival rate is relatively high, and they can quickly take shape.

Generally, French marigold cuttings taken in summer can bloom between August and December.

Notes on propagating French marigold

Note that depending on the variety, French marigold blooms at different times. Generally, it takes about 40-70 days from sowing to flowering. Therefore, when sowing, you can choose a suitable sowing time so that it blooms at the appropriate time.

Note that during the seedling stage, suitable temperature and humidity should be maintained to prevent pests, diseases, and plant death.

How to grow French marigold: how to care for French marigold

How to grow French marigold

Light

French marigold is a light-loving plant and needs ample sunlight when being grown. Generally, spring and autumn can meet the light needs of French marigold, but note that in the hot summer, direct sunlight should be avoided, and shading is also needed at noon, though do not shade too much.

Temperature

Basically, French marigold can grow well between 10°C and 30°C. A few points to note: the winter temperature should be kept above 5°C, so that frost damage is unlikely; before flowering, the temperature is best kept between 12°C and 15°C; in daily care, the temperature is best kept at 20°C or below.

Water and fertilizer

Water and fertilizer are very important for French marigold. When watering, you need to make sure the soil was dry beforehand, and then water thoroughly, but be careful not to let it get too dry. For fertilizing, generally once every 7-10 days is enough, but in the low-temperature winter season, fertilizing should be reduced. Generally, when planting out, some base fertilizer should be applied first, and if the soil fertility is insufficient, additional topdressing is needed.

Potting

Generally, French marigold seedlings need to be potted when they grow 2-3 leaves. When potting, a flower pot with a diameter of 10-15 cm can be used, and after potting, repotting is basically not needed.

Pests and diseases

The common disease of French marigold is root rot, which can be controlled by drenching the roots with thiophanate-methyl. The main pest is spider mites.

Propagation

French marigold is generally propagated by sowing and cuttings. Sowing is done between November and March. Cuttings propagation can be done between June and August.

Propagation methods of French marigold

Sowing propagation of French marigold

Sowing is a commonly used method when propagating French marigold. When sowing, this is generally done between November and March; in warmer climates, sowing can be done all year round. When sowing, direct sowing can be used, or indoor pot sowing.

Collect the French marigold seeds separately. When sowing, you can sow directly, or use relatively loose soil as a seedbed for sowing. After disinfecting the sowing medium, sow the seeds, and cover them lightly with vermiculite or similar. Keep the germination temperature between 22°C and 24°C, and they will generally germinate in one week. After sowing, once they have grown for about one month, they can be transplanted into pots.

In addition, it can also self-sow. French marigold has strong vitality. Generally, if the seeds are not collected in time and fall to the ground, under suitable temperature and humidity conditions, it can grow on its own.

Cuttings propagation of French marigold

Besides sowing propagation, French marigold can also be propagated by cuttings.

The time for taking French marigold cuttings is mainly in summer and autumn, with June to August being best. Generally when taking cuttings, you can remove the tender shoots of French marigold, about 10 cm long, and insert them into flower pots, or directly into the ground. After cutting, shading is needed; the survival rate is relatively high, and they can quickly take shape.

Generally, French marigold cuttings taken in summer can bloom between August and December.

Notes on propagating French marigold

Note that depending on the variety, French marigold blooms at different times. Generally, it takes about 40-70 days from sowing to flowering. Therefore, when sowing, you can choose a suitable sowing time so that it blooms at the appropriate time.

Note that during the seedling stage, suitable temperature and humidity should be maintained to prevent pests, diseases, and plant death.