What are the points to note when repotting flowers?
After flowers have been grown in pots for 1-3 years, their root systems keep developing, which restricts their growth. At this point, the flowers need to be repotted to ensure healthy growth. So what are the details?
Chinese rose
The main purpose of repotting is to enlarge the pot diameter, remove old soil, replace it with fresh growing medium, add base fertilizer, tidy the root ball, remove dead roots, prune overly long roots, stimulate new root growth, and give the potted flower a new environment. For fleshy-rooted flowers such as peonies (Paeonia suffruticosa), clivia (Clivia miniata), and orchids, the fleshy roots should be washed and dried before repotting.
Repotting is generally done in March or April. More precisely, the best time to repot is when the buds begin to swell but the new shoots have not yet unfurled. When repotting, first use a small bamboo strip to loosen the soil around the pot wall, push the plant out of the old pot, and after the root ball comes out, shake off about half of the old soil, and at the same time cut off dried, rotted, and overly long roots.
The drainage hole at the bottom of the new pot must be covered with more than 3 pieces of broken pot shards in an overlapping crisscross pattern, so that water drains freely while soil is not lost. According to the size of the new pot, first add an appropriate amount of growing medium as a base layer, then place the plant in and add new soil, while using a small wooden stick or similar object to poke the soil firm so that the new soil closely combines with the plant's root ball. The pot soil should not be filled too full; leave the water opening to make future watering convenient.
After repotting, water immediately, thoroughly soaking once until water seeps out from the bottom of the pot. Do not fertilize at that time; it is best to wait until the seedling has developed new roots and begun to resume growth (usually about half a month), then supplement nutrients so it grows better. After repotting, to reduce leaf evaporation, place the pot in a shaded place for a few days first, then gradually expose it to light, and after it adapts, place it in a spot with ample bright light.