To propagate Chamaecyparis (also known as false cypress), the most common method is by taking stem cuttings, ideally in late summer or early fall when the wood is semi-ripe; remove the lower leaves from the cutting, dip the base in rooting hormone, and plant in a well-draining potting mix, keeping the environment humid with misting and providing bottom heat to encourage root development; ensure the cuttings are placed in a shaded area until established. 

Key steps for propagating Chamaecyparis with cuttings:

Choose the right time: Late summer to early fall is generally considered the best time to take cuttings as the wood will be semi-hardwood. 

Select healthy stems: Take cuttings from healthy, actively growing branches on the plant. Cutting size: Aim for cuttings around 3-4 inches long with a few sets of leaves. 

Remove lower foliage: Strip off the bottom leaves from the cutting, leaving a few leaves at the top. 

Cut at an angle: Make a clean cut at the base of the cutting at a slight angle to help identify the top and bottom. 

Apply rooting hormone: Dip the cut end of the cutting into a rooting hormone powder or gel. 

Potting medium: Use a well-draining potting mix with good aeration, like a mix of peat moss, perlite, and sand. 

Planting the cuttings: Insert the cuttings into the potting mix, making sure to bury the base of the cutting firmly. 

Provide humidity: Cover the cuttings with a plastic bag or dome to maintain high humidity levels. 

Light and temperature: Place the cuttings in a bright, indirect light location with mild temperatures. 

Watering: Keep the potting mix moist, but not soggy, misting regularly to maintain humidity. 

Root development: Check for root development after a few weeks by gently pulling on the cutting. 

Important considerations:

Variety selection: Some Chamaecyparis varieties may root more easily than others. 

Greenhouse propagation: For best results, consider using a greenhouse or propagation chamber with controlled temperature and humidity. 

Preventing rot: Avoid overwatering and ensure good drainage to prevent fungal diseases.