1、Uncovering the crucial metabolic pathways in the invasive plant

Hydrocotyle verticillata is native to Europe and America, and has been identified as an invasive plant in China. This plant has a good capacity for tolerance to PTE exposure and is a candidate for phytoremediation of PTE-contaminated water (Zhang et al., 2020).

2、Physiological and Molecular Mechanisms of Plant Responses to Copper

Cu is a cofactor for a variety of enzymes, and it plays an important role in photosynthesis, respiration, the antioxidant system, and signal transduction. Many studies have demonstrated the adverse effects of excess Cu on crop germination, growth, photosynthesis, and antioxidant activity.

3、Molecular Mechanisms of Plant Responses to Copper: From

As a micronutrient, Cu has low cellular requirements in plants. However, its bioavailability may be significantly reduced in alkaline or organic matter-rich soils. Cu deficiency is a severe and widespread nutritional disorder that affects plants.

4、What does Copper Do for Plants?

Copper increases plants’ efficiency at using energy from sunlight, forming chlorophyll and resisting some plant diseases. In the US, copper-deficient soils cause stunted growth in many crops. You might see leaf curling and chlorosis (yellowing) in crops such as wheat and citrus.

5、Effects of copper stress on plant growth and advances in the mechanisms

This work reviewed the studies related to copper stress in plants domestically and overseas, and systematically summarized the physiological process of Cu absorption, transportation and accumulation, and the tolerance mechanism of plants in response to copper stress.

Hydrocotyle vulgaris L.: a new cadmium

In the present study, one round of hydroponic culture for 14 days with different cadmium (Cd) concentrations (0, 0.5, 1, and 2 mg L−1 Cd) was carried out to test whether Hydrocotyle vulgaris L. is a Cd-tolerant plant.

Hydrocotyle vulgaris: Systematics, Etymology, Habitat, Cultivation

Geographic Distribution and Habitat – Hydrocotyle vulgaris is a perennial plant native to northern Africa, Europe and the Caucasus and surrounding territories.

Copper bioavailability, uptake, toxicity and tolerance in plants: A

Most of the studies revealed that Cu 2+ and Cu + are the most abundant forms of Cu for plant uptake, and their mobility is reliant on pH, organic matter etc. (Amery et al., 2008).

Potassium in plants: Growth regulation, signaling, and environmental

Potassium (K) is an essential element for the growth and development of plants; however, its scarcity or excessive level leads to distortion of numerous functions in plants.

Uncovering the crucial metabolic pathways in the invasive plant

In this study, variations in the transcriptome and metabolomics of the leaves of plants exposed to various concentrations of copper ions (Cu 2+) for 7 d were analyzed.

Copper plant, scientifically known as Hydrocotyle vulgaris, is a popular aquatic plant cherished for its unique shape and elegant appearance. Widely cultivated in home gardening due to its low-maintenance nature and ornamental value, copper plant’s fertilization preferences—particularly its affinity for potassium-rich fertilizers—depend on its growth habits, nutritional needs, and the role of potassium in its development.

I. Growth Habits and Nutrient Requirements

1. Growth Characteristics: As a perennial aquatic herb, copper plant features round or kidney-shaped, serrated leaves that float gracefully on water, optimizing photosynthesis. It thrives in warm, humid environments (15–30°C) and requires adequate sunlight for healthy growth.

2. Nutritional Needs: While not light-intensive, copper plant relies on essential nutrients:

   • Nitrogen (N): Crucial for chlorophyll synthesis and leaf growth.
   • Phosphorus (P): Supports root development and flower/fruit formation.
   • Potassium (K): Enhances stress resistance, stem strength, and promotes flowering.

II. The Role of Potassium-Rich Fertilizers

1. Accelerating Growth: Potassium stimulates cell division and elongation, boosting growth rates. It also strengthens disease resistance, reducing the risk of infections.

2. Regulating Physiological Functions: Potassium improves water metabolism, enhancing drought tolerance, and increases cold resistance, ensuring resilience in adverse conditions.

3. Promoting Flowering: Potassium directly influences flower bud differentiation, increasing bloom rates and extending flowering periods.

III. Copper Plant’s Relationship with Potassium Fertilizers

1. Optimal Fertilizer Types: Balanced fertilizers containing N-P-K are ideal. Organic options like compost or bone meal improve soil structure while providing nutrients.

2. Timing:

   • Spring/Summer: Higher nitrogen demand for leaf growth.
   • Fall: Reduce nitrogen to prevent overgrowth during dormancy.

3. Application Rates: Biweekly applications of diluted, balanced fertilizers suffice. Over-fertilization leads to excessive growth, compromising aesthetics.

IV. Recommendations and Cautions

1. Monitor Plant Responses: Observe for signs of nutrient imbalance (e.g., yellowing leaves, wilting) and adjust fertilization or soil conditions accordingly.

2. Avoid Over-Fertilization:

   • Excess nitrogen causes spindly growth.
   • Lack of phosphorus hinders root/flower development.
   • Excess potassium may lead to "fertilizer burn" (root damage).

3. Blend Fertilizers Smartly: Combine N-P-K fertilizers in appropriate ratios to ensure comprehensive nutrition while mitigating risks from single-nutrient overload.

Copper plant indeed benefits from potassium-rich fertilizers due to their growth-promoting, stress-alleviating, and flowering-enhancing effects. balanced fertilization practices—tailored to growth stages and soil conditions—are critical to avoid harm. With proper care, copper plants thrive as vibrant, low-maintenance ornamentals.