How Do You Propagate Marigolds? Understanding Propagation Methods in One Article

The marigold, which carries an auspicious meaning, has long been regarded as a flower of respect for the elderly. Native to Mexico, it is not demanding about soil and does best in fertile, well-drained sandy loam. It prefers a warm, humid environment with plenty of sunlight. Seed propagation is the main method, though cuttings can also be used. Let's take a look below!

Seed Propagation of Marigolds

1. Spring sowing: Sow seeds in an open-field seedbed from late March to early April. Because the seeds need light, cover them with soil and water after sowing. The optimum temperature for seed germination is 20-25°C. Seedlings emerge about 1 week after sowing, with a germination rate of about 50%. When the seedlings reach 5 cm tall, transplant them once, and when they have grown 7-8 true leaves, plant them in their final position.

2. Summer sowing: To control plant height, you can also sow in summer. After emergence, summer-sown plants can bloom 60 days later.

Cutting Propagation of Marigolds

Marigolds can be propagated by cuttings in summer; they root easily and grow into plants quickly. Cut 8-12 cm young shoots from the mother plant as cuttings, remove the lower leaves, and insert them into potting soil, inserting 3 cuttings per pot. Water thoroughly after insertion and provide slight shade; roots will form after 2 weeks. Then gradually move them to a sunny spot for routine care, and they can bloom about 1 month later.

Growing Conditions for Marigolds

1. Temperature: The suitable growing temperature for marigolds is 15-25°C, and the suitable temperature during the flowering period is 18-20°C. The relative air humidity of the growing environment should be 60-70%, and the winter temperature should not be lower than 5°C. In summer, when the high temperature exceeds 30°C, the plants grow leggy, the stems and leaves become loose, and they bloom less. Below 10°C, growth slows down.

2. Light: Marigolds are light-loving plants. Plenty of sunlight is very beneficial to their growth, making the plants short and sturdy with vivid flower colors. With insufficient sunlight, the stems and leaves become soft and slender, and the flowers are few and small.

3. Soil: Marigolds are not demanding about soil and do best in fertile, well-drained sandy loam.

Are Marigolds Toxic? Marigold Propagation Methods

The marigold, which carries an auspicious meaning, has long been regarded as a flower of respect for the elderly. Many friends worry that marigolds are toxic, so are marigolds actually toxic? Let's look at the answer below, along with the propagation methods for marigolds.

Are Marigolds Toxic?

Marigolds are non-toxic. Not only are marigolds non-toxic, they can also help remove toxins. They are especially rich in lutein, which is both antioxidant and provides beneficial pigment to the macular area of the eyes. It can filter blue light and has the effect of improving eyesight and clearing heat.

Marigold Propagation Methods:

The main propagation methods for marigolds are sowing and cutting.

(1) Seed propagation: For sowing, generally choose March-April for sowing in a hotbed. Before sowing, soak the seeds in warm water (water temperature 35-40°C) for 3-4 hours, then remove them and rinse once with clean water. Drain the water and they are ready to sow. Sowing should be done on a windless, sunny day. Level the surface of the seedbed soil and water it thoroughly once; sow after the water has permeated, then cover with a very thin layer of fine soil. The suitable germination temperature for marigold seeds is about 20°C. After sowing, they germinate in 4-5 days, and the seedlings emerge from the soil quickly. When the number of true leaves reaches 2-3, one transplanting is needed, and by late May they can be planted out in the open field. Generally, they can bloom 70-80 days after sowing. Summer sowing is also possible to meet demand for the National Day period; summer-sown marigolds generally bloom in 50-60 days.

(2) Cutting propagation: Marigold cutting propagation can be carried out between May and June. Choose young shoots from robust plants free of pests and diseases as cuttings. Cut about 10 cm of the shoot tip, make holes with a thin wooden stick, and insert them into an open-field cutting bed. Firm the soil and build a shade shed for shade, keeping the soil and air humidity. They will root in about 2 weeks, be ready to leave the nursery in 3 weeks, and bloom in about 35-42 days. Because cutting-propagated plants grow for a short time, they can bloom while still relatively short, and their flowering period is easy to control, making them especially suitable for applications such as flowerbed arrangements.

Marigold Propagation Methods

Seed Propagation of Marigolds

Marigolds are generally propagated by seed.

Marigold seeds germinate easily, and sowing is generally done from late March to early April in spring. Sow the marigold seeds into potting soil; a sowing pot can be used. After sowing, keep the temperature at 15-20°C, and seedlings usually emerge in one week.

After the marigold seedlings emerge, let them continue to grow. When the marigold seedlings grow to 5 cm with 7 to 8 leaves, they can be transplanted and planted in their final position.

When propagating marigolds by seed, a certain temperature must be maintained. After sowing, cover with soil and water to ensure sufficient moisture. From sowing to flowering takes about 50 days. If propagated by sowing in summer, it takes 60 days to bloom. When selecting seeds, choose fruits set after autumn flowering; they should be fresh and glossy. This is because seeds set from summer flowering have a low germination rate.

Cutting Propagation of Marigolds

Cutting propagation of marigolds is carried out in summer, in May-June.

Take young shoots about 10 cm long as cuttings. After cutting them off, remove the lower leaves and insert them into sand or vermiculite. After inserting the marigold cuttings, water thoroughly and provide shade. They generally root in about 10 days, and once rooted they can be transplanted.

After transplanting, marigolds are relatively easy to care for. Generally, after transplanting, gradually move the marigolds to a sunny place for routine care, and they can bloom about 1 month later. During the period from planting to flowering, fertilize once every 20 days with a thin, well-rotted liquid fertilizer to keep the soil fertile. Water appropriately to keep the soil slightly moist. Pinching can be done several times to increase branching and encourage marigolds to bloom more.