Many gardeners are crazy about gladioli, from these truly royal flowers, pleasing to the eye with bright colors and an elegant noble form of inflorescences. But over time, their color may change for completely seemingly inexplicable reasons. It seems that the florist did everything right, but the result left much to be desired. But there is a reasonable explanation for everything. What happens in the second and subsequent years with the color scheme of gladioli of different varieties is described in this article.
Scientists have found that various diseases can be the causes of discoloration of gladioli .
- One of them is Fusarium. It is easy to identify by the characteristic brown spots on the bulb. Do not plant it, it is better to destroy it immediately so that the fungus does not spread to another seed.
- In cold damp weather, gladioli can get black rot. In this case, the plants first turn brown and fall leaves, then the stem dies. Sclerotiniosis also does not respond to treatment.
- In similar weather conditions, botrythiosis, or gray rot, spreads. Reddish spots appear on the leaves, the flowers lose their decorativeness, the stem rots, and the bulb is followed by it. Its bottom becomes soft, it is easy to “push” it.
- Pathogenic bacteria of scab, which produce brown spots on the leaves below, can get onto the bulbs of gladioli from the ground. Over time, they grow, and the flower dies.
- Root cancer also causes big trouble . Watery neoplasms appear on the bulbs. Naturally, such planting material must be discarded.
- Another “headache” of gardeners is a viral mosaic. With this disease, alternating dark and light spots become visible on the leaves, which then appear on the flowers, which sharply reduces their decorative effect. They become not so bright and beautiful, become smaller, the number of buds is noticeably reduced.
To avoid diseases, it is important not only to create the most favorable growth conditions for gladioli, but also to carry out the necessary preventive treatments in time, including chemicals.
Can gladioli pollinate?
Often florists complain that the gladioli growing next to each other become the same color. At the same time, they naively believe that the reason lies in pollination (it occurs when pollen is transferred from one flower to another). Of course, gladioluses can become dusty. But gardeners should not worry about this, since rarely one of them grows gladiolus from seeds. And the corms and the resulting babies fully retain the signs of the mother plant .
How to keep the color of gladioli?
As mentioned above, it is important to ensure that gladioli are not sick and are not affected by pests (thrips and aphids). It is also necessary to plant these flowers correctly - according to a certain pattern, without mixing varieties, because when digging and cleaning for storage, you can accidentally discard the most beautiful of them, which are highly decorative. As a rule, the bulbs of such gladioli are more susceptible to disease, they are stored worse. As a result, you can easily send weak and sick corms of the very variety that most pleased flowering in the summer to the trash. And then be surprised that there were only pink or red gladioli.
On the prepared bed, it is necessary to plant gladioli with the so-called varietal groups , install the appropriate plates with the names of one or another variety and at the same time draw up a planting plan. Digging and storing corms should also be sorted.
As for the children, they should be carefully removed from the ground so that in the future they do not mislead the grower. They can well survive in warm winters and germinate in the spring. So as a result, flower beds may appear among the plantings of one variety of gladiolus with a different color of the flower.
Every year it is required to change the place of planting of gladioli, which will help prevent the spread of various viral and fungal diseases.
Of the very old corms (over 4 years old) it is unlikely to be able to get high-quality flowers with intense coloring. To maintain the variety, you need to constantly grow young planting material from children.
Experts recommend giving preference to Russian varieties, rather than foreign ones, which in our conditions are sick and do not give full-fledged colors.
We should not forget that for lush and prolonged flowering, gladioluses require a lot of sun. If in the morning they will be in the shade, then flower stalks will appear much later than usual (the difference can be from 15 to 20 days).
In order for the stems of gladioli to grow straight and not require garter, corms need to be planted in the ground to a depth of at least 15-20 cm.
Regularly applied fertilizers will have a positive effect on flowering. The first time they need to be fed when the plants appear the third leaf, the second time - at the stage of the sixth leaf and the third - when buds appear.
Preparing the gladiolus bulbs for planting in the next video.