Can Gladiolus Be Grown in Water? Cultivation Methods and Water Change Frequency Are Key

To decorate the home and beautify the environment, more and more people now grow a few plants at home, and gladiolus is one of them. We know that gladiolus has many uses and benefits, and ornamental value is the main one. If you want the best ornamental effect, what growing method should you use? The answer is hydroponics. So can gladiolus be grown in water? If so, what exactly is the hydroponic cultivation method for gladiolus? Let's take a look together.

Can Gladiolus Be Grown in Water?

Scientific research shows that gladiolus is indeed a plant that can be grown hydroponically, but its rootstock is a corm, so certain techniques are needed when growing it in water, such as plant selection, rootstock treatment, water change frequency, and nutrient addition. Below, the editor will introduce the detailed hydroponic method for gladiolus.

Hydroponic Cultivation Method for Gladiolus

1. Plant Selection

To give the hydroponically grown gladiolus a good foundation, the plant must be selected well. When choosing, it is best to pick one with a relatively large corm and a relatively firm exterior; such a plant indicates that the bulb is relatively robust and can store more nutrients.

2. Rootstock Treatment

Remove some of the older stem scales from the corm, then in the areas without bulb scales, use a tool to cut several slits, which helps the gladiolus root quickly after hydroponic planting. Once treated, the rootstock can be placed into the hydroponic container.

3. Adding Water

Add water to the hydroponic container. The water used must be clean and hygienic; generally tap water is fine, but if the alkalinity is too high, it can be left to stand for a few days. The water level only needs to reach about 1 cm up the corm; there is no need to submerge the entire corm in water. Then place it in a cool place and wait for the young shoots to sprout.

4. Temperature

In the hydroponic cultivation method for gladiolus, temperature is the key factor affecting its growth rate. If conditions permit, the daytime temperature can be kept at 20-25 degrees, and the nighttime temperature at 10-15 degrees. The temperature must not be too high or too low, otherwise growth will stop.

5. Changing Water

Before sprouting, water can be changed once every 10-15 days; after it takes shape, once every 3-5 days. If water is not changed for too long, it easily causes microorganisms to breed in the water, which is unfavorable for the growth of gladiolus and can easily lead to root rot. Changing the water frequently can effectively avoid this problem.

6. Nutrition

Hydroponically grown gladiolus also needs sufficient fertilizer. When changing the water, some solid fertilizer can be appropriately added, but the most suitable fertilizer is the nutrient solution purchased from a professional flower shop. It is specially formulated according to the nutrients gladiolus needs, and just a few drops are added each time the water is changed.

Hydroponic Flowers

I. Definition of Hydroponic Flowers

Hydroponic flowers use modern bioengineering technology, employing physical engineering, chemical engineering, and bioengineering methods to domesticate and induce ordinary flowers so that they can grow normally in water, thus forming a new-generation high-tech agricultural project. It uses original modern biological improvement technology to enable flower plants originally adapted to grow in terrestrial environments, through short-term scientific domestication, improvement, and cultivation, to quickly adapt to growing in aquatic environments. With hydroponic flowers, the upper part is full of flowers and lush foliage, while the lower part has fish playing about; the ornamental value is relatively strong, and you can enjoy the flowers, view the roots, and appreciate the fish. It is green, environmentally friendly, clean, and low-effort, so hydroponic flowers are also called "lazy person's flowers."

II. Research on Seedling Cultivation of Hydroponic Flowers

The process of hydroponic cultivation of flowers is actually a process of aquatic mutagenesis, referring to the process of promoting the formation of aerenchyma between the plant and root tissues under the stress of an anaerobic environment. Under the stress of an anaerobic environment, it stimulates the rapid formation of unique molecular mechanisms and physiological and biochemical processes within the plant, thereby achieving a process of forced adaptation and active adaptation. In this process, the creation of anaerobic signals is the key signal for closing and opening the formation of aerenchyma, the formation of metabolic mechanisms, and physiological and biochemical changes. Oxygen free radicals, ethylene signals, hormone signals, and signals are all direct signals or cascade reaction signals produced under anaerobic conditions. Under the action of these signals, the expression of related genes is initiated, thereby achieving the transition and metabolic morphological transformation of plants from terrestrial to aquatic environments.

Common woody flowers in Hunan include: cycad (Cycas revoluta), gardenia, Radermachera sinica, Ficus lyrata, rubber fig, jasmine, Pachira macrocarpa, Dracaena fragrans, weeping fig, osmanthus, camellia, kumquat, Schefflera octophylla, croton, Rhapis excelsa, ivy, Photinia fraseri, and five-needle pine.

Herbaceous flowers mainly include: (1) Foliage ornamental flowers: Monstera deliciosa, Sansevieria trifasciata, Asparagus setaceus, Dracaena sanderiana, Dieffenbachia, Spathiphyllum, Epipremnum aureum, Syngonium podophyllum, and Dieffenbachia seguine. (2) Perennial flowers: carnation, Asparagus setaceus, Gerbera jamesonii, chrysanthemum, calla lily, Chinese rose, gladiolus. (3) Bulbous flowers: hyacinth, Cyclamen, tulip, narcissus, calla lily, tuberose, Clivia miniata, etc. (4) Succulent flowers: Schlumbergera, Cereus, cactus, Graptopetalum, etc., and Sempervivum. (5) Others: Oncidium, Cymbidium sinense, spider plant, Tradescantia zebrina, Reineckea carnea, Phalaenopsis, and Fuchsia.

Herbaceous and woody hydroponic flowers are mainly concentrated in the following families: (1) Araceae: Epipremnum aureum, Aglaonema modestum, Dieffenbachia picta, Aglaonema commutatum 'Silver Bay', Aglaonema commutatum 'Golden Queen', Philodendron bipinnatifidum, Calathea makoyana, mini Monstera deliciosa, Monstera deliciosa, Alocasia cucullata, Scindapsus pictus, Philodendron, Philodendron panduriforme, Philodendron 'Imperial Green', Syngonium podophyllum, Alocasia, Anthurium, and Dieffenbachia 'Camille', etc. (2) Commelinaceae: Tradescantia pallida, Tradescantia spathacea, Lophatherum gracile, Tradescantia zebrina, etc. (3) Liliaceae: Aloe, Aloe arborescens, Haworthia fasciata, spider plant, Cordyline fruticosa, Dracaena, Dracaena angustifolia, Sansevieria trifasciata, Agave, Dracaena sanderiana, Scilla, Aglaonema 'Silver Edge', and Ophiopogon jaburan, etc. (4) Crassulaceae: Aeonium, Sedum spectabile, Pachyphytum, Graptopetalum, and Bryophyllum, etc.

III. Induction of Water Roots in Hydroponic Plants

Hydroponic technology is the process of inducing the formation of plant water roots and enabling normal growth and development in a nutrient solution, so the formation and growth of water roots is the core of this technology. Hydroponic flowers use comprehensive technical measures such as modern physics, chemistry, and biotechnology to place different flower varieties in a rooting-promoting substrate. The rooting speed is greatly affected by environmental conditions and their own biological characteristics. First, the difficulty of water root formation differs among different plants: herbaceous types are fast and easy, while woody types are slow and difficult; plants with large intercellular spaces are easy, while those with slow growth and tightly arranged cells are difficult; shade-loving hygrophytic and mesophytic terrestrial plants are easy, such as Araceae plants, while sun-loving drought-tolerant terrestrial plants are difficult, such as peach trees. The morphology of water roots also varies among different plants, but there are regular similarities. Compared with terrestrial roots, water roots are mostly fibrous root systems, and root hairs are few or degenerated; this is because the aquatic environment causes physiological changes in the plant. Therefore, creating a suitable aquatic environment is the focus of our technology. Only in a suitable aquatic environment can the continuous formation and development of water roots be promoted. For example, dissolved oxygen in water is a necessary condition for root respiration; once oxygen is lacking, water root formation will be inhibited and may even turn brown and rot. Therefore, during the mutagenesis process, oxygen must be monitored and controlled in real time by computer.

In addition, suitable water temperature and appropriate nutrient solution concentration and water level all affect the cultivation of water roots, and these must be realized through computer control. These technologies are the core of achieving hydroponic cultivation for all plants. Without computer control, it is difficult to achieve water root cultivation, especially for the cultivation of mutagenized plants. Root induction under hydroponic conditions has relatively high root activity. The central cylinder part of terrestrial plants does not show obvious changes under aquatic conditions, but the cells of the cortical parenchyma tissue will produce cracks, forming aerenchyma similar to rice roots to adapt to the aquatic environment. The morphology, structure, and physiological activity of aquatically induced roots all undergo corresponding changes under partially submerged conditions to adapt to normal growth under hydroponic conditions. The induction methods mainly include using temperature, light, moisture, regional dissolved oxygen, and nutrient solution and hormone treatments to find the most suitable inducing environment. Different flowers also differ in the difficulty of aquatic mutagenesis.

IV. Induction Methods in Root Induction Include:

(1) Substrate treatment: Through research on the stomatal parameters of spider plant leaves under treatment conditions of ceramsite irrigated with nutrient solution, perlite irrigated with nutrient solution, pumice irrigated with nutrient solution, general nutrient solution hydroponics, and soil cultivation, the experimental results show that the stomata on spider plant leaves are oval or round in shape, and the guard cells are half-moon shaped. The stomata distributed near the leaf tip and middle leaf area are obviously more numerous than those at the leaf base and leaf margin. The distribution degree of stomata is relatively small at the leaf base, and the stomatal density gradually decreases from the leaf tip to the leaf base, showing: leaf base, leaf middle, leaf tip. Comparing different substrate cultivations for the stomatal parameters of the lower epidermis in the middle section of spider plant leaves: the area of a single stoma in soil cultivation is the smallest, obviously lower than general nutrient solution hydroponics, pumice irrigated with nutrient solution, and ceramsite irrigated with nutrient solution treatments; the maximum stomatal index in the middle section of leaves treated with soil cultivation is significantly higher than nutrient solution hydroponics, pumice irrigated with nutrient solution, and ceramsite irrigated with nutrient solution treatments.

(2) Plant growth regulator treatment: Natural plant hormones and synthetic hormones are organic substances with similar physiological effects, so synthetic hormones have been widely used in horticultural plant production in controlling plant growth, preserving flowers and fruits, increasing yield value, preserving freshness and storability, promoting cutting rooting, and improving grafting survival rates, playing a fairly important role in these aspects. Commonly used general hormones include NAA (naphthaleneacetic acid), IAA (indoleacetic acid), IBA (indolebutyric acid), and ABT (rooting powder). Research shows: and are the most suitable treatment concentrations for hydroponic ivy cuttings; newly synthesized phosphonate compounds and can significantly increase the rooting rate, root number, and root length of cut chrysanthemums; the best effect on hydroponic rooting of hibiscus. Among them, plants often used in hydroponic experiments include Aglaonema modestum, oleander, Phalaenopsis, Anthurium, and many other plants. At the same time, root pruning, shading, and water level also have a certain influence on root induction. During the hydroponic process of succulent flowers like Kalanchoe, the roots induced after cutting off the original main root are more suitable for the hydroponic environment than untreated original roots, and roots induced with root shading grow better than those induced without shading.

(3) Water cutting method: Generally used for plant species that easily root and grow relatively quickly in aquatic environments, such as Monstera deliciosa, Scindapsus pictus, Dracaena sanderiana, Philodendron erubescens, Yucca, Alocasia, Cordyline, Epipremnum aureum, Reineckea carnea, gardenia, spider plant, narcissus, etc. Select healthy, pest-free, sturdy branches, wipe them with an alcohol cotton ball, use scissors to cut at a slant several millimeters below the node, insert into water, and carry out hydroponics after rooting. When cutting branches, if the branch has aerial roots, the aerial roots should be well protected and inserted into the water. The root system of water cuttings grows in water; the roots are complete and robust, attractive in color, not easy to rot, and grow relatively vigorously.

(4) Root trimming method: This method is mostly used for plants that have already taken shape, and different root removal methods are adopted according to the difficulty of plant rooting, including: complete root removal, root removal and no root removal, and root trimming methods. Some species are plants that do not easily root in water, such as palms, Chamaedorea elegans, and Beaucarnea recurvata. Larger plants such as Monstera deliciosa, Alocasia, etc., and flowering plants such as azalea, camellia, Daphne, Kalanchoe, Hippeastrum, pomegranate, calla lily, and Euphorbia milii often are not de-rooted. Select flowers with ornamental value, healthy plants, robust growth, and already formed plants cultivated in soil or other media. Move the potted plant with roots, remove the soil, then rinse the soil off the roots with water and cut off part of the roots and all rotten roots, then carry out hydroponics. When cleaning the roots, it is suitable to use running water, then soak in potassium permanganate solution, benzalkonium bromide, or carbendazim and other surface disinfectants for several minutes to remove bacteria. Finally, use stones or perlite to fix the plant in a prepared container and add water to cover the roots. At the beginning, change the water once a day to maintain dissolved oxygen in the water, while also cleaning the container and roots, 1/2--1/3. After a week, the water change frequency can be reduced until the cultivated flowers grow white water roots, indicating that they have adapted to the aquatic environment. After that, water can be changed every day or even at longer intervals. For plants that root relatively easily, such as Chinese trumpet creeper, the roots can also be removed after washing, then disinfected and hydroponically grown. For cactus balls, after completely removing the roots, dry them and rest them over a container filled with water. The bottom of the cactus ball must not touch the water, and it relies on the evaporation of water in the container to induce new roots.

(5) Tiller bud removal method: Suitable for flower plants that easily sprout tiller buds at the root collar, such as pomegranate, boxwood, privet, oleander, Phalaenopsis, and bromeliads. The method steps are simple, and the survival rate is relatively high. Select robust and healthy tiller buds, cut them off along the root collar with a knife. Buds longer than several centimeters are all usable. Cut them into a horseshoe-shaped cross-section, retain the tip and leaves, protect the integrity of the tiller bud roots, wash off the soil attached to the roots, and put the root part into water for cultivation, exposed above the water.

(6) Stolons-taking method: Some flower plants can produce multiple stolons during growth, and these stolons have nodes, and roots and buds grow at the nodes, such as strawberry, spider plant, and Aechmea. Using this characteristic of flower plants, small plantlets on the stolons can be cut off for hydroponics, which is especially simple and convenient.

What Hydroponic Flowers and Plants Are There? Hydroponic Flower Cultivation Techniques

Hydroponic flowers are a type of flower with excellent ornamental value. With hydroponic flowers, the top is full of floral fragrance, and the fish below can play freely. They are not only hygienic and environmentally friendly but also very low-effort, so hydroponic flowers are also called lazy person's flowers and are a good helper for home decoration, suitable for placement in the living room, bedroom, balcony, study, and courtyard. Today, what the editor shares with you is an introduction to what hydroponic flowers and plants there are and some knowledge and techniques for hydroponic flower cultivation.

What Hydroponic Flowers and Plants Are There——Variety Introduction

I. Many plants, both common and uncommon in our daily lives, can be grown hydroponically, including general green plants and beautiful flowers. Carnation, Asparagus setaceus, Gerbera jamesonii, tulip, calla lily, Ficus lyrata, Dracaena fragrans, Spathiphyllum, Sinningia speciosa, Cyclamen, Chinese rose, gladiolus, orchid, Aglaonema, Schefflera octophylla, hyacinth, chrysanthemum, and some potted flowers all have very good hydroponic effects and can be called excellent handicrafts.

II. Flowers and plants that can be grown hydroponically also include Monstera deliciosa, Aglaonema, Clivia miniata, camellia, jasmine, Fuchsia, five-needle pine, Philodendron, rubber fig, Dracaena fragrans, azalea, kumquat, Matthiola incana, Phalaenopsis, begonias, ferns, palms, and others. Some foliage plants can also be grown hydroponically, such as Crassulaceae species like Aeonium and Sedum spectabile, Araceae plants like Philodendron bipinnatifidum, Alocasia cucullata, and Anthurium, Guangdong spider plant, and other types like Paphiopedilum and Schlumbergera, more than a hundred kinds in total.

Characteristics of Hydroponic Flowers and Plants

The ornamental value of hydroponic flowers is very strong. They not only have artistic vase shapes, but also white water root systems and substrates of various colors. Even more peculiar is that flowers and fish can be cultivated together, integrating multiple ornamental effects such as viewing flowers, foliage, roots, and fish. Moreover, hydroponic flowers are grown in water without soil, so pests, diseases, fungal and bacterial contamination are also very few. Water and nutrient management are also more convenient, maintenance is simple, and there is no need to water frequently, and they can beautify the space.

Cultivation Techniques and Precautions for Hydroponic Flowers

I. When preparing nutrient solution for hydroponic flowers, metal containers must not be used, and they must certainly not be used to store nutrient solution. For beauty and to benefit the growth of plants and flowers, it is best to use glass, enamel, and ceramic vessels as containers. Also, attention must be paid to the water used when preparing the nutrient solution. If tap water is used, the tap water must be treated to prevent harmful substances in the water from harming the plants. A small amount of humate compounds or sodium edetate needs to be added.

II. When hydroponic flowers are cultivated as potted plants, the cultivation water in the pot generally needs to be changed once every one or two months. Tap water can be used, but be sure to let the tap water stand for a period of time before use to keep the root system temperature stable. Moreover, most hydroponic flowers are shade-tolerant and neutral flowers suitable for indoor cultivation, and they also have different requirements for light. In hydroponic plants with appropriate light, temperature, and nutrient solution concentration, the whole roots or root tips are white.

Conclusion: There are many types of hydroponic flowers, and their ornamental value is extremely strong. They are beautiful and elegant. Placed in transparent glass bottles in the living room, bedroom, balcony, study, and courtyard, they are all very good decorations and handicrafts. They can not only add color to home life, but also better show the owner's unique taste. The above is the editor's introduction to what hydroponic flowers and plants there are and some knowledge and techniques, hoping to help friends who like hydroponic flowers.