• Nguồn: [Ebook] The Houseplant Handbook: Basic Growing Techniques and a Directory of 300 Everyday Houseplants – David Squire
• Biên tập: Dũng Cá Xinh (Tháng 02/2022)
• Dịch: Team Codai.net 

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Repotting Houseplants (Sang chậu cây cảnh trong nhà)

Eventually, most houseplants (except those grown for their short-term display) fill their pots with roots and need to be transferred to slightly larger ones. A plant left in the same pot will slowly deteriorate. When selecting a new pot, check the following.

• The new pot is clean, dry, and about 1in (25mm) larger. When a plant is already in a large pot, perhaps 6in (15cm) or more wide, the new pot can be 2in (5cm) larger.
• When repotting into a clay pot, put a piece of broken clay pot (known as a crock), concave side downward, in the base to prevent the drainage hole from becoming blocked. This is unnecessary when repotting into plastic pots; these are usually filled with peat-based compost, which is more fibrous and less likely to fall out of the smaller drainage holes into the base.
• Use the same type of compost in which the plant is already growing.

Step-by-Step Repotting

1. The day before repotting, thoroughly water the compost and allow the excess to drain. This is essential since a plant with a dry root ball will not rapidly become established in a new pot.
2. Place the fingers of one hand over the top of the root ball and invert it, together with the pot. Sharply tap the rim on a hard surface (without damaging the plant’s leaves), so the pot and root ball separate.
3. Fill a suitable pot with compost to about one-third of its depth and press to lightly pack it. (Add a crock in its base first if it is a clay pot.)
4. Without damaging the root ball, position it in the center of the pot. Check that the top of the root ball is about ½in (12mm) below the new pot’s rim. Add or remove compost.
5. Keep the plant and root ball upright and carefully dribble fresh compost around it. Gently pack it until just covering the root ball. When repotting a plant in a large pot, leave a slightly larger space between the compost’s surface and rim.
6. Stand the plant on a well-drained surface and gently water the compost from above, without unduly disturbing it. A couple of waterings may be necessary. Watering from above also helps to settle fresh compost around the root ball.
7. Stand the pot on a clean saucer or place it in a cachepot. Initially, position the plant in light shade for two to three days, or until established.

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Dũng Cá Xinh

Có những ngày mưa gió, ngày nắng chói chang nhưng khi mở cửa ra hàng hoa dại vẫn nằm đó dưới bậc thềm. Không nhạt không úa mà vẫn còn vẻ tươi trong như ngày nào.

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