How to Grow Sedum clavatum Well? A Detailed Guide to the Latest Growing Methods
Sedum clavatum is also known as Eji Peony, Otome Peony, Canyon Stonecrop, etc. It is a perennial herbaceous succulent plant of the genus Sedum in the Crassulaceae family, with two different forms: one has relatively narrow and elongated leaves, and the other has wider leaves. Rau is the Korean transliteration of this variety and is not a separate variety; it is commonly used for the wide-leaf form. Now let us take a look at how to grow Sedum clavatum well!
Growth Habits of Sedum clavatum
Sedum clavatum is a perennial subshrub that often produces new shoots from the lower part of the stem to form clusters. In the wild it is mostly distributed in Mexico, growing on rock walls or andesite, and it is now widely cultivated in many parts of the world. It prefers a cool, dry, sunny environment and well-drained sandy soil. Under conditions of sufficient light and a large temperature difference between day and night, beautiful little red dots appear at the leaf tips, and the leaf color turns a jelly-like light green or yellow-green, like translucent frozen jade fat that seems ready to burst at a touch.
Propagation Methods of Sedum clavatum
1. Leaf cuttings: Lay a complete mature leaf flat on moist sandy soil, with the leaf surface facing up and the underside facing down; there is no need to cover it with soil. Place it in a shaded spot, and after about 10 days small leaf clusters and new roots will grow from the base of the leaf. Bury the root system in the soil. After roots appear, water appropriately and expose to light (avoid strong sunlight), and gradually a sturdy new plant will grow.
2. Stem cuttings: For stem cuttings, tiller shoots or top shoots can be used. There is no limit on the length of the cuttings taken, but after the cut surface has dried, remove the lower leaves and insert into a sand bed to avoid excessive water evaporation. Roots generally form about 20 days after insertion, and watering can begin once roots have formed. Before rooting, it is normal for the lower leaves to dry up and shrivel; once the root system has developed well and water uptake is sufficient, they will naturally recover. The soil must not be too wet, otherwise the cut surface is prone to yellowing and rotting. When the roots reach 2 to 3 cm, the plant can be repotted, and division is best carried out in spring.
How to Grow Sedum clavatum Well
1. Soil: Sedum clavatum is best cultivated in sandy soil with good drainage and aeration, to facilitate the removal of excess water and the growth of the plant's roots. It can be prepared with 1/3 leaf mold, 1/3 sand, and 1/3 garden soil. Repot once every 1 to 2 years in spring, and the necrotic old roots can be trimmed off.
2. Light: The more sufficient the light and the greater the temperature difference between day and night, the more vivid the leaf color of Sedum clavatum. When temperatures allow, it is best to place it outdoors for care to ensure sufficient light. When light is insufficient or the soil is too moist, it will become leggy, with the whole plant turning light green or dark green, sparse leaves with elongated spacing, and accelerated upward growth, seriously affecting its ornamental value and possibly even causing death due to impaired photosynthesis.
3. Water: Because Sedum clavatum has a high internal water content, Purple Pearl rots easily in overly humid environments, so never water too much. To avoid water accumulating at the roots, it is best to choose a pot with drainage holes at the bottom. Beginners can use breathable terracotta pots; glass containers absorb heat and have poor aeration, so use them with caution. Water about once every 10 days, and just water thoroughly each time. The watering frequency can be adjusted as appropriate according to climate differences in different regions and seasons.
4. Temperature: Sedum clavatum stops growing or suffers mild frostbite below 5 degrees Celsius, and at 0 degrees Celsius and below, the water in the leaves freezes and the cells die. When temperatures are too high (above 35 degrees Celsius) or too low (below 5 degrees Celsius) in winter and summer, the plant stops growing; at this time, watering should be temporarily reduced or stopped, and the watering frequency resumed when temperatures become suitable. In summer, when temperatures are high, pay attention to ventilation and prevent prolonged exposure to strong sunlight to avoid sunburn.
5. Pruning: Sedum clavatum usually needs dry old leaves removed promptly to prevent accumulation that leads to bacterial growth. When the plant becomes leggy or grows too tall, the top branches and leaves can be pruned to shape it and control its height, so as to maintain a graceful plant form. The cut top portion can be dried at the wound and then inserted into slightly moist sandy potting soil to take root and become a new plant. The stem and branches and leaves at the bottom can sprout more side buds.
6. Fertilizer: Sedum clavatum should not be fertilized too much, especially with nitrogen fertilizer. If too much fertilizer is applied, the plant is prone to becoming leggy and the leaves do not turn red. Apply a light fertilizer mainly of phosphorus and potassium once a month, but during its growing period the fertilization frequency should be higher, generally once about every 20 days.
7. Pests: The main pest of Sedum clavatum is scale insects. More than 80% of plants bought from flower markets and similar places have scale insects on their roots. In the early stage, the pests are commonly found on the roots or in the center of the plant. After discovering the pests, immediately isolate the plant from other plants and cut off the roots where scale insects have bred. Spray Huahuashen on the affected areas or drench the roots to kill them. Completely eradicating scale insects may require several cycles. For prevention, a small amount of carbofuran or Tuchongdan can be mixed into the soil mix.
8. Diseases: The common disease of Sedum clavatum is mainly black rot of the plant, which occurs mostly in summer. After discovery, it must be quickly isolated from other plants. In the early stage, the rotted parts can be completely cut off, and a little fungicide (chlorothalonil, carbendazim, etc.) can be applied to the cut surface. After the cut surface dries, insert it into loose sandy soil and it can re-root. If black rot has already spread to the plant's growth point, it can be considered dead; discard it as early as possible to prevent infection. Other diseases (such as sooty mold, etc.) can be treated by spraying diluted fungicides such as chlorothalonil and carbendazim, and for prevention a small amount of fungicides such as chlorothalonil and carbendazim can be mixed into the soil mix.