The demanding rose wants to be fertilized and watered according to its needs. In particular, if there is insufficient fertilization, the leaves often turn yellow, which is why yellow leaves are usually an indication of an undersupply of important nutrients. However, the discolored foliage can also be a first indication of an infection with blackspot.

If the rose lacks something, it gets yellow leaves

Rose petals turn yellow when there is a lack of nutrients

Leaves turning yellow can be an indication of a general nutrient deficiency, but also allow conclusions to be drawn about the lack of individual minerals or trace elements. A nitrogen deficiency, for example, is reflected in yellow leaves and the increased appearance of blind shoots, in the case of a phosphorus, manganese or magnesium deficiency, the leaves turn yellow and are finally dropped. An iron deficiency, the so-called chlorosis, shows up in yellow leaves and darker leaf veins. A nutrient deficiency can have many different causes.

Do not water roses too vigorously

Although roses need a lot of moisture, they should not be watered too generously. Water also washes the nutrients out of the soil and leaches it out. Above all, make sure not to water the roses with a strong jet of water or similar, rather use a watering can with an attachment.

Fertilize roses as needed

Insufficient or incorrect fertilization can also be the cause of the yellowing leaves. Roses should receive a main fertilization three times a year and be supplied with a weak dose of liquid fertilizer in between.

Yellowing can also be a first indication of blackspot

However, the yellowing is not always due to a lack of nutrients: Even with an infection with the blackspot fungus, the rose petals first turn yellow and then develop the characteristic black-brown spots.

tips

However, you do not have to buy expensive special fertilizer, you can also fertilize your roses inexpensively with coffee grounds or tea leaves.

Category:

Vegetable garden