Crassula perfoliata var. minor 'Falcata' is a succulent plant in the genus Crassula of the family Crassulaceae.

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Crassula perfoliata var. minor 'Falcata', also known as the propeller plant, is a succulent in the genus Crassula of the family Crassulaceae. It is a perennial succulent herbaceous plant native to eastern South Africa, where it grows in a semi-shrubby form and can reach a height of over 1 m. Its sickle-shaped leaves are thick and juicy, gray-green, without leaf stalks, growing symmetrically and pressed close against the stem in a very neat arrangement; the leaves at the base are small and grow larger toward the top, so that the plant looks as if it were pieced together from many small sickles, which is very unusual.

Crassula perfoliata var. minor 'Falcata' usually blooms at the turn of summer and autumn, with orange-red or bright red flowers made up of countless small blossoms clustered together; the flowering period is fairly long and can last more than a month.

Crassula perfoliata var. minor 'Falcata' likes a warm, dry and semi-shady environment; it is not cold-tolerant, tolerates drought, fears waterlogging and dislikes strong light. The optimum growing temperature is 15-25°C, and the winter temperature should not be lower than 10°C.

How to handle Crassula perfoliata var. minor 'Falcata' after buying it:

A newly purchased Crassula perfoliata var. minor 'Falcata' should be placed on a windowsill or balcony with a sheer curtain, not in a place that is too shady and poorly ventilated. It does not need much watering; the potting soil only needs to be slightly moist. In hot, dry summer weather, spray around the pot to increase air humidity. In winter, when room temperature is low, damp potting soil will cause root rot and shriveling of the stems and leaves.

Care tips:

Planting: For potting soil, use a mix of peat soil, sand and cinder in a 2:1:1 ratio, and add a layer of expanded clay pellets on the surface of the potting soil to prevent the basal leaves from touching the soil and rotting. Once rot is found, remove the basal leaves and air-dry the wound or apply sulfur powder to the wound.

Watering: During the growing season, Crassula perfoliata var. minor 'Falcata' needs plenty of water, and the potting soil should be kept moist. Even in summer and winter, the potting soil should not be left dry for long periods, because its fibrous roots are very fine and once dried out they are difficult to restore to their absorbing function, which causes the leaves to lose water and soften and, in severe cases, leads to the death of the plant.

Fertilizing: Fertilize once a month with diluted cake fertilizer water or a 15-15-30 slow-release fertilizer specially made for pot flowers.

Pruning: If Crassula perfoliata var. minor 'Falcata' grows too tall, set up a support or pinch out the growing tips to lower the plant's profile, and use the cut tip shoots for cuttings propagation. During care, if the stems and leaves of Crassula perfoliata var. minor 'Falcata' fall off, or the plant cannot stand upright, cut off the upper part of the plant together with the leaves and use it for cuttings; the surviving plant will then grow robustly and look more ornamental, while the mother plant left after heading back will produce many young plantlets that can be used for propagation.

Pests and diseases: Crassula perfoliata var. minor 'Falcata' is mainly harmed by gray mold on its fleshy leaves; at the early stage of occurrence, spray with a 500-fold dilution of 50% thiophanate-methyl wettable powder. When indoor ventilation is poor, whiteflies may cause damage; spray with a 1500-fold dilution of 50% fenitrothion emulsifiable concentrate to kill them.

Propagation: Crassula perfoliata var. minor 'Falcata' is commonly propagated by cuttings and sowing. For cuttings, choose plump, upright leaves, often cut off a short stem, let it dry slightly, then insert it into a sand bed; it can root in about 15-20 days. The leaves can also be cut into pieces 5-6 cm long; after the cut surface dries, lay them flat on a moist sand surface, and in about 20-30 days roots will grow from the healed area and new shoots will appear. For sowing, do it in spring from April to May; the seeds sprout in about 10-15 days, and the seedlings grow fairly quickly.

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