Which flowers is monopotassium phosphate suitable for, and what effect does it have on flowers

Monopotassium phosphate is a compound fertilizer. Phosphorus can promote the development of flowers and fruits, while potassium can promote thick and sturdy stems and the formation of starch; it also raises soil acidity, which benefits flowers that like acidic media, such as jasmine, gardenia, Aglaia odorata and kumquat. Use an aqueous solution of monopotassium phosphate for watering or foliar spraying. Which flowers is monopotassium phosphate suitable for? What effect does monopotassium phosphate have? Let's find out below.

Which flowers monopotassium phosphate is suitable for.

Monopotassium phosphate is acidic, so it is suitable for acid-loving flowers such as rhododendrons and camellias, while flowers that like alkaline environments, such as cacti and Chinese roses, are not suitable for it.

The effect of monopotassium phosphate on flowers

1. Enhancing the stress resistance of potted flowers

Because potted flowers are limited by their pots and are watered continuously during the growing season, while also absorbing nutrients themselves, if fertilizer is not supplemented in time, the flowers will show various poor growth conditions. Watering once a week with a 0.2% aqueous solution of monopotassium phosphate can both reduce the amount of watering and prevent nutrient loss, and also enhance the stress resistance of the flowers. For flowers potted in late autumn such as pansies, petunias and pot marigolds, spraying once a week on the leaves gives obvious cold resistance; for summer and autumn flowers such as impatiens, Torenia and zinnias, watering once a week can enhance their drought resistance; for woody flowers such as golden-edged winter daphne, camellias and Aglaia odorata, combining root watering with foliar spraying can prevent infection by anthracnose, sooty mould and rhizopus rot. For woody flowers such as jasmine, gardenia and rhododendrons, frequently spraying the leaves with a 0.3% monopotassium phosphate solution during the growing period can make the branches strong and the leaves lush, with many and brightly coloured flowers. For herbaceous flowers such as scarlet sage, petunias and dahlias, spraying 2 to 3 times with a 0.3% monopotassium phosphate solution at the bud stage can make the flowers larger and more numerous, with brilliant colours.

2. Making potted flowers shorter and sturdier

Potted flowers require their growth height to match the size of the pot, and the stems should not grow too tall, so as not to affect their display on the balcony. For tall-stemmed flowers such as dahlias, hollyhocks and poinsettias, watering with monopotassium phosphate often makes the stems shorter and sturdier, and the flowers much larger; for verbena and dianthus species, using the same method not only makes the stems grow thick and sturdy, but also prevents lodging; for wallflowers and tall-growing cockscomb, combining root watering with foliar spraying can both dwarf the plant shape and reduce leaf growth and make the flowers large and peculiar in shape.

3. Extending the full-bloom period

It can buffer changes in soil acidity and alkalinity and stabilise the pH value of the soil. It can promote the growth and reproduction of microbial flora in the rhizosphere of flowers. It can improve the soil, making the flower roots well developed, the leaves thick and deep green, and the stems sturdy, with enhanced disease resistance and stress resistance. The full-bloom period of potted flowers is relatively short, mostly caused by the small nutrient capacity of the soil in the pot and a lack of trace elements such as potassium and phosphorus, especially for flowers that respond sensitively to potassium fertilizer, which will show symptoms such as brittle stems, few flower buds, flowers that wither easily and are not very bright due to potassium deficiency. The countermeasure is to use a monopotassium phosphate solution to soak the pot thoroughly when potting up flower seedlings, and afterwards spray the leaves once every half month. With this method, pansies, petunias and others potted in October will bloom in November, and will be in full bloom from February to May of the following year; for hibiscus, Aglaia odorata, white orchid and camellias, spraying monopotassium phosphate when the flower buds form can extend the bright flowering period by 5 to 7 days; for foliage plants such as lucky grass, Japanese cleyera and large-leaved sedum, watering 3 to 4 times with monopotassium phosphate will also make the flower stems thick and prominent, with the ornamental value of both flowers and leaves flourishing.

4. Root dipping

Before transplanting flowers and trees, use 0.4 to 0.5 kg of monopotassium phosphate per mu, mix it evenly with dry fine soil, add water to make a slurry, and dip the roots in it when transplanting and planting. For example, one week after narcissus is placed in water, the narcissus bulb sends out tender leaves and fibrous roots have also grown at the base; it can be soaked in a 0.1% monopotassium phosphate solution instead of clean water for 1 day each week to promote wider leaves and fragrant flowers.

5. How to use monopotassium phosphate

1. For preparing the aqueous solution of monopotassium phosphate, a concentration of 0.2% is suitable for watering. Foliar spraying should be determined according to the growth stage of the flowers: 0.1% at the seedling stage, and 0.2% at the flower stalk formation stage. The concentration for use as a base fertilizer is 0.5%; just mix the pot soil until moist. If sufficient base fertilizer is applied in the flower pot, using chicken manure and composted plant ash mixed into the pot soil, this pot soil will not lack potassium; if nutrients are not lost due to excessive watering, there is no need to water with monopotassium phosphate, or only water with a little.

2. Monopotassium phosphate can only serve as a supplementary nutrient element for flowers, and must be applied when other nutrients are sufficient for it to have a significant effect. Generally, spraying and watering before the bud stage give better results. Note that it should not be applied on rainy days or at noon on sunny days; it is better to fertilize before 10 a.m. and after 4 p.m., and appropriately mixing in 1/1000 aspirin in March and April also gives very good results.

That is all for the introduction. When buying high-purity monopotassium phosphate produced by a regular manufacturer, the absorption and utilisation rate during foliar spraying is high, and absorption is fast; low-purity inferior goods or even fake goods not only have no yield-increasing effect, but can also cause serious losses.