How to Propagate Haworthia cooperi var. obtusa 'Ice Lantern'? Latest Propagation Methods Explained

There are many varieties and horticultural forms of Haworthia cooperi var. obtusa 'Ice Lantern'; common ones include large Haworthia cooperi, Haworthia cooperi 'Hime', Haworthia cooperi var. truncata, white-spotted Haworthia cooperi, hairy Haworthia cooperi, Haworthia cooperi 'Di', flat-leaved Haworthia cooperi, Ice Lantern Haworthia cooperi, and variegated Haworthia cooperi. Today we will introduce the propagation methods for Ice Lantern Haworthia cooperi.

Division Propagation of Ice Lantern Haworthia cooperi

Haworthia cooperi can be propagated by division when repotting, or during the growing season you can dig up the young offsets beside the mother plant. Both rooted and unrooted offsets can survive; plant rooted ones directly, while unrooted offsets should be dried for 1 to 2 days until the wounds are dry before planting. Newly planted plants should not be watered too much to avoid rot; resume normal care once new roots have grown. During the growing season, you can also choose plump, healthy fleshy leaves for leaf cuttings. After inserting, keep the potting soil slightly moist; they will easily root at the base and produce small buds. Once the buds are slightly larger, they can be planted separately.

Seed Propagation of Ice Lantern Haworthia cooperi

Sowing is also one of the propagation methods for Haworthia cooperi, but it requires artificial pollination. Seeds can be sown as soon as they are collected. The sowing medium can be a mix of 3 parts vermiculite and 2 parts leaf mold or peat moss. Before sowing, it is best to sterilize the soil at high temperature to eliminate pathogens and insect eggs. After sowing, cover with a piece of glass; seedlings will emerge in about 20 days. After emergence, remove the glass, ensure ventilation, do not let the soil become too dry, and transplant when the seedlings become too crowded. Among the sown seedlings, some variant plants may appear. You can select young plants with compact rosettes, thick fleshy leaves, highly transparent "windows," and prominent vein patterns to keep as stock plants. If you find seedlings with unusual leaf color, select them out too; they may grow into precious variegated mutant plants.

How to Grow Ice Lantern Haworthia cooperi

1. Watering: Like most plants, when watering Ice Lantern Haworthia cooperi, you should follow the principle of "don't water if not dry, water thoroughly when you do." To avoid root rot, the pot should be kept free of standing water and protected from prolonged rain. Once the soil is dry, it needs watering immediately; if the soil is too dry, the leaves will shrivel and lose their vitality. Note that to judge whether the potting soil is dry, you need to poke your finger down about 3 cm; if it is dry, it needs watering.

2. Humidity: Ice Lantern Haworthia cooperi likes humid air. When the surrounding air is relatively dry, you can use a sprayer to mist around it, thereby increasing the humidity of its growing environment. If this still does not produce obvious results, you can cover it with a plant cloche and spray a little water mist inside the cloche. To let Ice Lantern Haworthia cooperi breathe, you need to uncover the cloche every day and let it air out for about ten minutes. Note that in the hot summer weather, you must not use the closed-cover method.

3. Fertilizer: Ice Lantern Haworthia cooperi does not like fertilizer; if you want to repot it, you do not need to fertilize it. If you want the plant to grow a bit faster, you can apply a light fertilizer twice during its growing seasons in spring and autumn. Note that newly potted plants and weaker Ice Lantern Haworthia cooperi must not be fertilized, to avoid burning the plants to death.

4. Repotting: Unlike many plants, Ice Lantern Haworthia cooperi needs repotting almost every year. This is because its roots secrete an acidic substance that gradually acidifies the soil it depends on, adversely affecting the plant's growth. Generally, we set its repotting time in spring or autumn. If you find during the growing season that it barely grows and its leaves have low water content, it is very likely caused by soil that is too acidic, and you should repot it immediately.