Cactus macrochia

Opuntia macrorhiza

The cactus Opuntia macrorhiza is a plant that grows primarily in North America. It has the following growth characteristics, propagation methods, cultivation methods, and control methods.

Growth Characteristics
- Environment: Opuntia macrorhiza thrives in generally dry and warm environments. It prefers well-drained soil and sunny locations. While relatively resistant to cold, it requires protection at very low temperatures.
- Size: This species generally grows to a height of 30–60 cm and forms a broad pad.
- Growth Form: It possesses a fleshy pad and features the characteristic spines of a cactus.

Propagation Methods
- Seeds: It can be propagated by seeds, but the germination process can be somewhat slow. It is important to maintain a warm environment when sowing.
- Cuttings: A common method involves cutting a pad and drying it to induce rooting. The cut pad should be exposed to the air for a few days to allow the cut surface to dry before planting.

Cultivation Methods
- Soil: Well-drained sandy soil is ideal. Cactus-specific potting soil is also suitable.
- Watering: Avoid overwatering; it is best to water only after the soil has completely dried out.
- Fertilizer: You can use an appropriate amount of cactus-specific fertilizer during the spring and summer growing seasons, but you should avoid over-fertilizing.

Uses in the Garden
- The Makrochiza is attractive to people due to its low water requirements and unique appearance. It is suitable for stone gardens or dry gardens, and can also be grown in pots on verandas or indoors.

Important Pests and Control Methods
- Diseases: Root rot can occur due to overwatering, and fungal infections may develop. Thorough drainage management is essential, and infected parts should be removed promptly.
- Pests: Scale insects and aphids can be problematic. These pests can be controlled by periodically inspecting the plant and using natural pesticides.

The Makrochiza is a relatively easy plant to care for, and it can grow steadily and healthily provided the right conditions are met.

Plant Type
Plant Family	Cactus and
Height	8~16cm
Spread	2m
Colors	yellow
Bloom Period	May to July
Water Needs	Bad
Exposure	Sunny
Freezing Resistance	-30°C

Golden cap cactus
Opuntia microdasys

Cactus Litoralis coquerel
Opuntia littoralis Cockerell