Whalehide Container

A- most greenhouse flowering plants are grown in pots. I should perhaps make a few general observations about these containers. Pots are available 111 a great variety of sizes, shapes, and materials- The sizl- of a pot is defined not by us height hut by the inside dia

Plant pots end seed containers are made in a variety of materials for different uses meter of the rim. The range of standard sizes includes 65 mm (2 ' in), yo mm {3$ in), 130 mm {5 in), and 180 mm (7 in); the so-called half-pots (half the height of normal pots) are also available 111 standard sizes. The materials of construction include flexible and rigid plastic, clay (earthenware), whalehide. papier-mache, and peat.

The longest-lasting types are those ot plastic and clay. The former, whether flexible or rigid, are lighter than clay pots, are easier to clean, and are available in a range of colours. Many gardeners, however, prefer the appearance of clay pots, In purely horticultural terms neither type is better than the other, but it is important to remember that they provide somewhat different environments for the potting mixture. Clay is porous and tends to absorb the moisture in the compost; plastic pots are impermeable (non-porous), so plants growing in them need to be watered less (or less often) in the greenhouse. However, exactly the opposite applies when pots are 'plunged'. This term means to take potted plants out of

Container Type Greenhouse

Above Vlaking a plunge bed Dig a trench slightly wider and deeper than the pots Fill ihe space between the pois with moist ash. coarse sand or peal then cover up pot rims with a thin layer ol soil Below Potting on Put a few crocks m the bottom ot ihe new pot, then partly fill 11 with growing compost Insert the plant, adding more compost around the root ball the greenhouse and bury them in a prepared hole in the garden to a depth that enables the nms of the pots to be covered by about 25 mm (1 in) of soil. Under these circumstances, clay pots will take up moisture from the surrounding soil, helping to keep the potting compost adequately moist, but impermeable plastic pots resist the passage of water, and the moisture ot the compost ot plunged plants in such pots must be checked more often in dry weather, For these reasons it is sensible to make a firm decision to use either plastic or clay pots, not both: tin*, is also important if you intend to use automatic or semi-automatic watering systems. New clay pots, incidentally, should be soaked in water for 4* hours and allowed to drain thoroughly before being used.

Whalelude pots are made from a form of thin, specialty treated cardboard that is colour-coded according to durability. Red ones have a useful life of up to one year; black ones (like papier-mache pots) will last only for a couple of months or so,

Feat pots are used when seedlings need to be grown on for a few weeks before potting on (transferring to larger, permanent pots) or planting in greenhouse border soil or outdoors. The peat allows the plant roots to grow through the walls of the pot and, in both potting on and planting out, the plant and its peat pot are transferred as one to the new growing medium.

The potting of plants is a less simple matter than many inexperienced gardeners realize. One of the commonest mistakes is to use too big a pot. Young plants should always be started off on the smallest size possible and then potted on as soon as their roots begin to crowd the available space. This applies especially to flowering plants, because under-potting tends to assist flower development, while over-potting encourages greater leaf growth. Seedlings and small plants, then, should be potted initially in a 90 mm (3} in) pot. Make sure that the fresh compost completely envelops the roots; then settle the compost around the roots by putting the newly potted plant sharply down on the bench. Apply a little water but do not make the compost sodden. When potting on becomes necessary, select the next size up — 130 mm (^ in) - rather than a larger pot. Because the plant is likely to remain longer in the bigger pot, put some crocks (pieces of a broken clay pot) or pebbles at the bottom of the pot before adding fresh compost. This will allow excess Water to drain away easily. Potting on should always be done with care to avoid damaging the root ball - the tangled mass ot roots and soil.

Above Vlaking a plunge bed Dig a trench slightly wider and deeper than the pots Fill ihe space between the pois with moist ash. coarse sand or peal then cover up pot rims with a thin layer ol soil Below Potting on Put a few crocks m the bottom ot ihe new pot, then partly fill 11 with growing compost Insert the plant, adding more compost around the root ball

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Responses

  • Oskar
    Can u still get whalehide flower pots?
    1 year ago

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