Root-Bound
When a plant grows for too long in its container, it generally becomes root-bound. With no room for additional growth, roots become tangled, matted, and grow in circles.
Root-bound - see POT BOUND.
S
Salt - crystalline compound that results from improper pH or toxic buildup of fertilizer. Salt will burn plants, preventing them from absorbing nutrients.
ROOT-BOUND - Often, when plants are left too long in their container, the roots become entangled and begin to grow in circles. There is hope by separating the roots the plants will survive when planted.
root-bound A condition in which a plant's roots have completely filled its container. Typically, the roots begin to encircle the pot's outer edge. Further growth is prevented until the plant is removed from the container.
Slightly root-bound plants are stimulated in to flowering because they 'thinks' they are going to die, so try to reproduce by flowering. This is demonstrated by the peace lily that Peter shows us.
Preventing Root-bound Roses
Container roses require annual repotting to keep them healthy and producing optimal blooms. Have your potted roses grown too big for their own good? Then it's time to replant! ...
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But if you start your zinnias eight weeks before transplanting, they'll be root-bound and too tall by the time they go into the garden.
Palms do not mind being root-bound and can be kept in the same container for several years. When repotting, however, take care not to injure or cut the roots.
If roots protrude through the drainage holes or are visible near the surface of the soil, the plant is root-bound and requires a bigger pot. If you are unsure, turn the planter over and tap gently to slide the plant loose from the pot.
If the plant has become root-bound it will be necessary to cut and unwind any roots that circle the plant, otherwise the roots will never develop normally. If the old medium surface has accumulated salts, the top layer should be removed.
A prolific bloomer, cosmos transplants can grow much too large in tiny nursery pots and become root-bound. The easiest, cheapest and perhaps most satisfying solution is to plant a seed and watch it grow. "It's easy to start from seed," says Shepherd.
If the plant is totally root-bound, make cuts from the top to the bottom of the root ball
3. Put some potting mix into the new pot
4. Center the plant and plant it at a depth of ½ inch from the top of the pot ...
How to: Forks: Create rows in flats (use like a wee rake), lift seedlings, tease apart dense rootballs. Knives: Separate flats, eject root-bound plants from their pots (run knife around the interior to dislodge), divide smaller perennials.
Without regular repotting, a brugmansia will become root-bound, which can damage the plants ability to grow healthy and produce blossoms. Your brugmansia should be repotted every 2 to 3 years in order to grow as it should.
Trees are a welcome feature at many cottages, but they can often mean not only shade, but dry, root-bound soil. Here is a handful of hardy perennials that can take it.
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Make sure that the plants you buy are not the ones in full bloom because these are already past their prime and will be leggy and root-bound. Choose plants that are still small and without buds.
No soil means no weeds, pests or diseases from soil and no tilling, crop rotation or root-bound plants. Nutrient-enriched water is fed directly to roots so all the plant's energy is spent growing, not reaching out for food.
When planting, be careful to spread roots out in the hole. If a potted plant is root-bound, break up the root mass by slicing up part way through the root ball from the bottom. Place the plant at the same level as it was in the pot.
When you test for watering, pay attention to the soil. If your finger can't penetrate 2 inches deep, you either need a more porous soil mix, or the plant is becoming root-bound.
Temperature ...
Take out the plants one by one to delay drying of the root ball. Pinch off long coiled bottom roots with a garden knife and gently rough up root-bound areas. Arrange the plants close enough together to make a full, attractive bed.
Feed them once every 3 to 4 weeks with 20-20-20 or any balanced fertilizer and repot the plant when roots fill the container. If an abutilon becomes root-bound or hungry, its leaves turn yellow and drop in protest.
A damaged leaf or dying flower is not necessarily a sign that the plant is diseased. Look instead for a strong root system that fills out the pot or cell, but at the same time isn't overly root-bound.
Re-pot any root-bound plants by placing in a slightly larger pot and backfilling with a good quality potting mix.
Dunk hanging baskets in a bucket of water with a little seaweed extract in it.
Also, just as in perennial gardens, maintenance should include cutting back in the fall, deadheading, clipping off dead stems and foliage, and dividing any plants that become root-bound.
It is very important to choose a pot that allows for proper drainage. "Christmas Cactus" recommends using a pot that is of appropriate size for the plant. It says these plants prefer to be root-bound rather than planted in a pot that is too large.
 See also: Plant, Soil, Water, Root, Container
  
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