Eruca vesicaria

Arugula has specific preferences for both the amount and method of watering it receives. Using the wrong watering technique can negatively affect your tomatoes. To properly water Arugula, apply the water directly to the soil in a slow and gentle manner. Avoid pouring all the water at once or using overhead watering. Although it should be done slowly, watering deeply is important to ensure adequate moisture for the entire Arugula growing area.

If you have overwatered your Arugula and are worried about disease, it's important to take immediate action. The best approach is usually to uproot the plant from its current location. After removing it from the ground, you should let the roots dry a bit before replanting it in a new spot that has well-draining soil. If you are growing the Arugula in pots, you might consider transferring it to a pot with better drainage. On the other hand, if you have underwatered your plant, simply water it more often.

Arugula has a high water requirement and needs to be watered frequently throughout the growing season. In the beginning, watering once or twice a week is sufficient. However, as the season progresses, increasing the watering frequency is necessary, especially during the summer months. Depending on the weather, watering your arugula twice a day or more may be required. Once your arugula has completed its main growth phases, you can reduce the frequency of watering to about once a week until the end of the growing season.

Arugula is a very popular plant and many gardeners have been able to successfully grow it. As a result, we have a good understanding of how to take care of these plants, including knowing how much water they need. On average, Arugula should receive about 1 - 1.5 inches of water per week, which should be evenly spread out during your weekly watering. If the weather gets hotter, you may need to increase the amount of water, but typically two inches per week is a good starting point.

Both underwatering and overwatering can be problematic for your Arugula and can present with similar symptoms. For instance, overwatering or underwatering can both result in foliage discoloration and wilting. When your Arugula is underwatered, the leaves will initially curl and droop, and you may observe a decrease in the vitality of the leaves. Underwatering can also hinder proper growth and overall development since this plant requires ample water. On the other hand, overwatering is more likely to lead to diseases such as rot and unpleasant smells arising from the soil. The symptoms of underwatering become noticeable faster compared to overwatering. Additionally, overwatering can be identified by the presence of excessive standing water or waterlogged soils.

Arugula thrives under full sun, requiring above 6 hours of sunlight a day for optimal growth. It can also manage in partial sun, with about 3-6 hours of sunlight daily. Originating from a habitat favorable to such settings, Arugula needs its dose of sunlight for healthy development. However, too much sun can stress the plant, while too little might cause insufficient growth. Being attentive to how sunlight moves through your garden and selecting spots that provide the right balance of light and shade are crucial for ensuring plant health.

Indoor Arugula plants require adequate lighting for optimal growth, especially when natural sunlight is insufficient, such as in winter or less sunny spaces. Artificial lights offer a vital solution by promoting faster, healthier growth. LED lights are preferred because they can be customized to provide specific wavelengths of light your plants need. Full sun plants need 30-50W/sq ft, partial sun plants need 20-30W/sq ft, and full shade plants need 10-20W/sq ft of artificial light. The light source should be placed 12-36 inches above the plant and turned on for 8-12 hours per day to mimic natural daylight hours.

Arugula may show several symptoms when grown indoors with inadequate light, including smaller new leaves, leggy or sparse growth, faster leaf drop, slower or no new growth, lighter-colored new leaves, chlorosis, sunscald, leaf curling, wilting, and leaf scorching. To address these symptoms, gradually move plants to a sunnier location each week, ensuring they receive at least 6 hours of direct sunlight daily. Use south-facing windows and keep curtains open. Alternatively, use artificial light for at least 8 hours daily or invest in professional grow lights. For outdoor plants, avoid sudden changes in light intensity to prevent sunburn. If it's trees obstructing sunlight, consider pruning them, and for smaller plants, you might transplant them during their dormant period to a location with better sunlight and drainage.

Arugula, botanically known as Eruca vesicaria, flourishes in temperate regions, with its ideal temperature range being between 68 to 100 °F (20 to 38 °C). Although it can adapt to different conditions, cooler climates are its preference. For optimal growth, particularly through seasonal changes, it's crucial to carefully manage temperatures, ensuring they remain above 20°C during winter cultivation to benefit the plant's growth. To prevent freezing damage when temperatures dip close to -5°C (25°F) in winter, consider bringing Arugula indoors or protect it using a temporary greenhouse or coverings like plastic film or fabric.

Arugula displays a moderate tolerance to low temperatures, performing best within the 20°C to 38°C range. Throughout winter, it's essential to keep the temperature above 0°C to avoid damage. Exposure to temperatures below -40°C can lead to leaves darkening, wilting, drooping, and eventually turning brown due to water-soaked necrosis. If frost damage occurs, remove the affected parts promptly and either move the plant to a warmer indoor setting or protect it using a makeshift greenhouse. Ensuring the plant has sufficient sunlight, ideally near a south-facing window, or providing supplemental lighting, can also be beneficial.

During the hotter months, it's crucial to keep Arugula's surroundings below 38°C as its growth tends to slow and it becomes more susceptible to issues like sunburn when temperatures exceed 43°C. In such cases, trimming off the sunburned and dried parts of the plant, relocating it to a shaded area during peak sun, and ensuring the soil remains moist by watering in the morning and evening can help mitigate heat stress.

Arugula, unlike other plants, has unique nutritional requirements due to being cultivated for its edible leaves. Among the essential nutrients plants need for proper development (nitrogen, phosphorus, and potassium), nitrogen plays the most crucial role in promoting foliage growth. However, it can be challenging for arugula to obtain sufficient nitrogen from the soil alone, leading many gardeners to opt for additional nitrogen supplements to ensure a bountiful harvest.

To benefit your Arugula throughout the growing season, there are several points when you should apply fertilizer. First, when preparing the ground for planting, make sure to amend the soil with nutrient-rich organic material like compost or manure at least 2 to 8 weeks before planting. When it's time to plant, amend the soil again using the same method. Once your seedlings emerge and reach about 2 inches tall, it's time for the next dose of fertilizer. From there, you can continue regularly feeding your Arugula with rich organic matter or a commercial fertilizer until harvest, typically every two to three weeks. Additionally, it's a good idea to add a layer of compost or manure around the plant to maintain a steady supply of nutrients.

When growing vegetables, it's important to choose nitrogen-rich fertilizers for healthy foliage. However, be cautious about using this near other vegetable plants that need to focus on fruiting instead of growing leaves. If you use too much nitrogen fertilizer, you may end up with lots of leaves but very few actual vegetables. For arugula plants specifically, make sure to avoid getting any fertilizer on the leaves. This can cause them to burn. Instead, apply the fertilizer a few inches away from the base of the plant. If your arugula is already unhealthy due to disease, pests, drought, or other reasons, it's best to address those issues before applying fertilizer. Fertilizer can be beneficial for healthy plants, but it can actually cause harm if used on unhealthy ones.

The best type of fertilizer for Arugula depends on various factors like the type of plant, environmental conditions, and the soil composition. Generally, Arugula benefits from high-nitrogen fertilizers due to its nitrogen requirements. To improve the soil at the beginning of the growing season, it is recommended to use manure or compost. For the rest of the season, a dry or liquid fertilizer can be used for feeding. During the seedling stage, it's advisable to apply a light amount of fertilizer and gradually increase it as the plant matures. Organic fertilizers, such as fish emulsion, soil meal, compost tea, alfalfa meal, blood meal, and chicken manure, are preferred by many as they often enhance the taste of vegetables. However, chemical fertilizers can also be used effectively. When choosing a chemical fertilizer, it is essential to check the NPK number, which indicates the proportions of nitrogen, phosphorus, and potassium. For high-nitrogen options, select a fertilizer with a higher first number, like a 13-2-5 or even one containing only nitrogen, such as a 16-0-0.

To fertilize your Arugula, the method depends on the type of fertilizer. For amending soil, dig at least 6 inches (preferably deeper) and mix the soil and amendment material together at a 2:1 ratio. Spread granular or powder fertilizers around the base of the plant, following the retailer's recommended amount. Mix these fertilizers into the top layer of soil to avoid washout or blowing away, keeping them about 2 to 3 inches away from the plant to avoid fertilizer burn. After adding dry fertilizer, water thoroughly. If you water your Arugula from a container, you can dissolve water-soluble chemical fertilizers into water and use the diluted mix to water the plants. This method is not suitable for irrigation or other watering methods.