Petals are leaf-like structures with different shapes, which are often brightly colored. Some petal cells contain color bodies, which can make petals appear yellow, orange or orange-red. Some cells have red, blue and purple petals because their vacuoles contain anthocyanins. Both of them have bright petals.
Sometimes the epidermal cells of petals form papillae, which makes petals have velvet luster; The epidermal cells of some plant petals contain volatile aromatic oil, or there are nectaries in the petals, which can emit aromatic odor.
Cultivation method
1, scorching method: put the end of the flower branch on the candle flame, immediately soak it in alcohol for one minute, and then rinse it with clear water. Hydrangea, clove, woody, peony, rose, chrysanthemum, ivory red, etc. It can be treated in this way.
2. Soaking and scalding method: soak the base of the flower branch in boiling water for about ten seconds, and block the incision to prevent the juice from overflowing in the flower branch tissue.
3. Deep-water first aid: When the flower droops, you can cut a short section at the end of the flower branch and put it in a container filled with cold water, leaving only the flower head exposed in the water. After an hour or two, Huazhi will wake up. This method is suitable for both herbaceous plants and woody flowers.
4, the use of preservative method: adding a proper amount of flower preservative in the container of flower arrangement can prolong the time of flower arrangement. In addition, using 1/3000 aspirin solution or 1/2000 potassium permanganate solution can prolong the flowering period by three to five days, and appropriate amounts of boric acid, sulfur, carbolic acid, salicylic acid, salt and vitamins can prolong the flowering period.
5. Enlarged incision method: generally, the base of the flower branch is obliquely cut; Or cut the base into two or four pieces, embed pebbles and open the gap; You can also crack the base by hammering to expand the water absorption surface. Among them, oblique cutting is the most commonly used method, and the latter two are mainly used for woody flowers, such as magnolia, hydrangea, clove and wisteria.