Cucumbers turn orange when they grow excessively ripe before harvesting, explains Veggie Gardener. The cucumbers first turn yellow, and if left on the vine, they quickly develop a vibrant orange hue. This happens because chlorophyll levels decrease past the point of peak ripeness. Orange cucumbers are very bitter and unsuitable for human consumption.Know More
The only way to prevent cucumbers from turning yellow and orange is to harvest them at the proper time. Ripe cucumbers have firm flesh with a medium-green rind and feel heavy for their size. Most varieties ripen between 50 and 70 days after planting.
Size is also an important indicator of ripeness. Each cucumber variety has a different optimal size and quickly develops a bitter flavor if allowed to grow larger. Some cucumbers, such as those used for pickling, are naturally smaller than other varieties. Consequently, gardeners must know what type of cucumber they have planted and the target size for ripe specimens in that category.
The most common cause of orange and yellow cucumbers is over-ripening, but the discoloration is sometimes a symptom of the Cucumber Mosaic Virus. According to Gardening Know How, the Mosaic Virus produces soft, mushy cucumbers with mottled patches and curled, withered leaves. This incurable virus also affects peppers. When a cucumber displays symptoms of the Mosaic Virus, the best course of action is to remove it from the garden.Learn more about Gardening & Landscapes
According to the Missouri Botanical Garden, heat stress or fungal disease can lead to the yellowing of hosta. Scorch or heat stress leads to browning leaf margins and yellow areas between the main leaf veins. Fungal disease causes the base of the leaves to rot, which causes leaves to yellow.Full Answer >
According to Gardening Know How and Home Guides, tomato leaves turn yellow for many reasons, including: a lack of nitrogen in the soil, lack of water, pest problems or magnesium deficiency. Minor yellowing during the growing season or on the lower parts of the plant is normal ? it does not call for grave concern. However, a bacterial, fungus or other tomato disease typically requires treatment.Full Answer >
Basil can turn yellow after it has fully matured or as a result of improper growing conditions. Typically, basil begins to naturally yellow after the plant has produced seeds.Full Answer >
Cucumbers that are yellow are overripe. Cucumbers that are yellow, have sunken areas, are wrinkled on the ends or puffy should be discarded. Cucumbers that are uniformly green and firm are of the highest quality.Full Answer >