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Mauranthemum Paludosum: A Guide to Growing White Crystal Chrysanthemum

White Crystal Chrysanthemum (Mauranthemum paludosum) is a plant of the Chrysanthemum genus in the Asteraceae family. It is a biennial or perennial herbaceous flower. The White Crystal Chrysanthemum grows to a height of 15 to 25 centimeters, and it is short and robust. It has many flowers and a early and long flowering period. The […]

White Crystal Chrysanthemum (Mauranthemum paludosum) is a plant of the Chrysanthemum genus in the Asteraceae family. It is a biennial or perennial herbaceous flower.

The White Crystal Chrysanthemum grows to a height of 15 to 25 centimeters, and it is short and robust. It has many flowers and a early and long flowering period.

The head-like inflorescence is terminal, and after flowering, it produces slender fruits that mature in late May.

White Crystal Chrysanthemum is native to North Africa and Europe. It is cultivated in Northeast China, North China, East China, and Shaanxi.

Mauranthemum paludosum

It prefers a warm and sunny environment, has a certain tolerance to cold, but is intolerant to waterlogging and prefers fertile and well-drained soil. It thrives in temperatures between 15°C and 25°C. The most common propagation method is through sowing.

White Crystal Chrysanthemum forms low clusters, with lush green leaves and elegant white flowers. It is an excellent ornamental flower and is often used in flower beds, gardens, along walls and rocks, and for greening highway isolation belts.

I. Morphological characteristics

The White Crystal Chrysanthemum is a biennial herbaceous flower of the Asteraceae family. It grows to a height of 15 to 25 centimeters and has alternate leaves that are deeply lobed once or twice.

The terminal inflorescence is discoid, with white ray flowers on the edge and golden yellow tubular flowers in the center. The colors are distinct, bright, and the flower diameter is 3 to 4 centimeters.

Mauranthemum paludosum

It can start flowering when it reaches a height of 15 centimeters, and its flowering period is from late winter to early summer, with peak blooming in March to May. After flowering, it produces slender fruits that mature in late May.

The White Crystal Chrysanthemum is short and robust, with many flowers, an early and long flowering period. When cultivated in clusters, it is dazzling and eye-catching, making it suitable for potted plants, combination plantings, or beautifying early spring flower beds.

It grows to a height of more than 10 centimeters. The leaves are deeply lobed. The flowers are terminal, with a diameter of about 2 to 3 centimeters. The outer ray petals are pure white, and the central tubular flowers are bright yellow.

When grown in clusters, it is elegant and refined. It produces fruits. It blooms from early spring to late spring, with an extremely long flowering period lasting 2 to 3 months.

II. Growing environment

Mauranthemum paludosum

White Crystal Chrysanthemum is native to North Africa and Europe. It is cultivated in Northeast China, North China, East China, and Shaanxi. It prefers a warm and moist environment with abundant sunlight and a cool temperature.

It does not flower well in insufficient light. White Crystal Chrysanthemum is cold-tolerant but not heat-tolerant. The most suitable temperature for its growth is 15 to 25°C.

It can safely overwinter at -5°C in winter, but if exposed to -5°C for a long period, the leaves may freeze, wither, and turn yellow. However, as the temperature rises, they will gradually recover and bloom.

White Crystal Chrysanthemum does not like high temperatures and excessive humidity. As the temperature rises in summer, the flowers will gradually wither.

It does not grow well at temperatures above 30°C. It should be placed in a cool and ventilated environment to prolong its flowering period.

White Crystal Chrysanthemum has strong adaptability and is not very picky about soil, but it prefers loose and fertile sandy soil. Keep the soil moist during the growing season and apply a compound fertilizer containing nitrogen, phosphorus, and potassium every two weeks.

During the long flowering period of White Crystal Chrysanthemum, supplement it with phosphorus and potassium fertilizer when it is in bloom. After the flowers fade, promptly remove the remaining flowers to promote the growth of new buds.

III. Propagation method

White Crystal Chrysanthemum is commonly propagated by sowing. It is usually sown in autumn, from September to October, with an optimal germination temperature of 15°C to 20°C.

During sowing, it is recommended to use a reed shade to cover the seeds and avoid using a thin film to cover them. Mix the seeds with a small amount of fine sand or potting soil and sow them evenly in a seedbed or seedling tray.

The thickness of the soil cover should be such that the seeds are not visible. Keep the soil moist, and germination occurs within 5 to 8 days. After the seedlings have grown slightly, apply a light top-dressing to promote their vigorous growth.

When they have developed two or three leaves, they can be transplanted for the first time. Remove the seedlings from their original soil, ensuring the soil in the planting bed is moist and water is applied promptly.

If necessary, use a reed shade to provide shade for two to three days. After transplanting, if the soil becomes dry, water it again. When the seedlings have grown four to five true leaves, they can be transferred to a nursery bed or nutrient bowl for further cultivation.

In late October, give a thorough watering. When the soil is not sticky or loose, form raised beds for overwintering. Use straw mats to protect them from the cold at night.

Although White Crystal Chrysanthemum is cold-tolerant, it is best to keep the young seedlings in a plastic greenhouse or cold room during winter to allow them to continue growing.

Watering and fertilizing should be done timely, and flower buds should be promptly removed to promote crown diameter enlargement. In the following early spring, they can be moved outdoors or planted in flower beds to enhance their ornamental effect.

They prefer warmth, have good cold tolerance, like full sunlight, and can tolerate partial shade. The optimal temperature for growth is 15°C to 25°C.

For those that have undergone one or two transplants in autumn, they can be directly planted in flower beds when they start flowering in spring.

For those that have not been transplanted after division in autumn, it is advisable to maintain and shape them in a well-fertilized bed in spring before planting them in flower beds or selling them in pots.

When planting, apply decomposed leaf compost or stable manure as a basal fertilizer, with a spacing of 15 centimeters between plants. After planting, water them once every 7 to 10 days.

Fertilization does not need to be excessive, and a diluted manure water can be applied every 2 to 3 weeks. Cultivate the soil once a month. After flowering in February, stop fertilizing.

Note: White Crystal Chrysanthemum prefers abundant sunlight and is not shade-tolerant. If autumn-sown plants have been grown vigorously and have not been transplanted, they can be lifted in late October.

Separate the clumps, leaving some soil clinging to the roots. Then, prepare a moist and fertile soil with a high content of humus and slightly sticky texture. Grasp a couple of seedlings and press them into a compact ball in the center of the prepared soil.

Place them in raised beds one by one, misting them to maintain moisture, which will promote the vigorous growth of roots and ensure that the seedlings remain small and robust.

In the following spring, they can be directly planted in flower beds or sold without wilting. Pro tip: White Crystal Chrysanthemum does not flower well during hot summer periods and is prone to wilting. If dug up and transplanted to a cool location, it can still bloom again in autumn.

The preferred soil for cultivation is fertile soil rich in organic matter or sandy loam soil. Good drainage and sufficient sunlight are required, as insufficient sunlight will result in poor flowering.

The soil should be kept moist during cultivation, as drought will negatively affect growth. After the flowers have faded, promptly remove the remaining flowers to promote the emergence of new buds.

White Crystal Chrysanthemum prefers warm temperatures, is not tolerant of high temperatures and excessive humidity, and grows best at temperatures between 15°C and 25°C.

During the rainy season, it is important to avoid prolonged dampness that can lead to rotting, which can extend the flowering period.

In warm regions, autumn sowing is preferred, while in North China, spring sowing is more common. The seeds germinate at an optimal temperature of 15-20°C and usually germinate within 5-8 days. They start flowering after 11-12 weeks after sowing.

Propagation is done through sowing. In Taiwan, autumn and winter are the sowing seasons, while in higher altitude areas, spring sowing is possible. The seeds are mixed with a small amount of fine sand or potting soil and evenly sown in a seedbed.

A thin layer of soil is then used as a cover, and the moisture is maintained. Germination occurs within approximately 5-8 days.

When the seedlings have 5-7 true leaves, they should be transplanted with a spacing of 15-20 centimeters into flower beds or planted in pots with a diameter of 17 centimeters.

For large-scale cultivation in flower beds, direct sowing can also be used. Prepare the soil, apply basal fertilizer, and then scatter the seeds on the surface. After the seedlings have developed, transplant or thin them according to the desired spacing.

IV. Care tips

White Crystal Chrysanthemum has relatively good drought resistance. It is generally watered once every one to two days. During the summer, it is important to water diligently but not excessively. The soil should be kept moist, as excessive watering can lead to root rot.

Due to its long flowering period and growth phase, White Crystal Chrysanthemum should be fertilized every 20-30 days. Therefore, it is necessary to keep the soil moist during normal cultivation. After the flowers have faded, promptly remove the remaining flowers to promote the emergence of new buds.

After the flowers wither, trim off the seeds, and then trim off the dead flowers and remnants to promote new branch growth and extend the flowering period. Additionally, regularly remove weeds to increase air circulation.

Common diseases and pests

Disease and pest control: Common diseases include leaf spot and stem rot, which can be sprayed with a 65% zinc dimethomorph wettable powder.

Common pests include blind bugs and leaf miners, which can be controlled by spraying with a 25% imidacloprid wettable powder at a dilution of 1500 times.

  • Leaf spot: The pathogens are Alternaria chrysanthemi and Stemphylium chrysanthemi. The disease can occur throughout the year, with the highest incidence during the warm and humid seasons from May to October. Control methods: ① Clear away dead branches and leaves, and promptly remove diseased leaves for centralized burning. ② In the early stages of the disease, spray with a 70% metominostrobin solution at a dilution of 800-1000 times. During the disease period, alternate between spraying with a 50% carbendazim or 75% chlorothalonil solution at a dilution of 800-1000 times, with a 7-day interval, for a total of 3-4 sprays.
  • Rust: The pathogen is Chrysanthemum stem rust. It is more severe during the rainy season in April and May, as well as in late autumn with heavy rainfall. Control methods: ① Remove diseased plants in a timely manner, and remove diseased leaves for centralized burning. ② Before the onset of the disease, regularly spray with an 80% zinc dimethomorph solution at a dilution of 500-700 times. During the disease period, spray with a 15% triadimefon solution at a dilution of 800-1000 times or a 25% triadimefon solution at a dilution of 1200-1500 times, with a 7-10 day interval, for a total of 3-4 sprays.
  • Wilt: The pathogen is Fusarium oxysporum. It is more severe during hot and rainy periods in summer. Control methods: ① Remove diseased plants in a timely manner and burn them. ② During the disease period, alternate between spraying with a 50% ammonium thiosulfate solution at a dilution of 800 times, a 50% carbendazim solution at a dilution of 400 times, or a 75% chlorothalonil solution at a dilution of 700-1000 times, with a 7-day interval, for a total of 3-4 sprays.

Main pests

  • Aphids: They can occur throughout the year, with two breeding peaks in April-May and September-October. Control methods: Regularly check the top shoots, the bottom of flower buds, and the petals of the plants. If aphids are found, spray a 10% imidacloprid wettable powder or a 1% clean milk solution at a dilution of 1000-15000 times in the evening.
  • Diamondback moth (Plutella xylostella): Caterpillars of this moth can cause damage from April to October, with the most severe infestations occurring in summer and autumn. The caterpillars mainly feed on the top buds and tender shoots of the plants. Control methods: Regularly check the plants and promptly spray with a 20% spinetoram solution or a 5% indoxacarb suspension concentrate at a dilution of 1000-1500 times in the evening if pest damage is found.
  • Measuring worm (Geometridae): Infestations can occur throughout the growth period, with the peak occurring in the upper-middle period of August. The caterpillars mainly feed on leaves, flower buds, and petals. Control methods: Regularly check the plants and promptly spray with a 21% emamectin benzoate solution or a 1.8% avermectin solution at a dilution of 1500-2000 times in the evening if pest damage is found.
  • Cutworms: They appear from late May to November, with the most severe infestations occurring from June to September. These underground pests specifically feed on the roots and stems of chrysanthemums, mainly during the early growth stage. Control methods: Regularly check the plants. If pest damage is found, mix 300 ml of ethoprophos emulsion with 25-30 kg of fine sand and apply it to the ridges in the evening.

V. Main Value

The White Crystal Chrysanthemum is low and sturdy, with many flowers. It blooms early and has a long flowering period.

When cultivated in clusters, it is dazzling and eye-catching. It is also suitable for potting or beautifying early spring flower beds. It can also be used as ground cover.

VI. Species Comparison

Mauranthemum paludosum, Chrysanthemum multicaule Desf, and Chrysanthemum carinatum are all ornamental flowers in the Asteraceae family. The differences in their morphological characteristics are as follows:

Mauranthemum paludosum:

The inflorescence is terminal and disc-shaped. The outer ray florets are silver-white, while the central disc florets are golden-yellow. The colors are distinct and vibrant, with a flower diameter of 3 to 4 centimeters.

Chrysanthemum multicaule Desf:

The inflorescence has a diameter of about 2-3 centimeters and is golden-yellow.

Chrysanthemum carinatum:

The inflorescence has a diameter of about 6 centimeters. The ray florets come in white, yellow, red, purple, brown, etc. They often form a two or three-color circular pattern, and the disc florets are purple-brown.

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Peggie

Peggie

Founder of FlowersLib

Peggie was once a high school mathematics teacher, but she set aside her chalkboard and textbooks to follow her lifelong passion for flowers. After years of dedication and learning, she not only established a thriving flower shop but also founded this blog, “Flowers Library”. If you have any questions or wish to learn more about flowers, feel free to contact Peggie.

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