Species Of The Genus Byblis

  1. gigantea
  2. liniflora

CULTURAL REQUIREMENTS Planting Media

Sphagnum peat moss, sphagnum moss (living or dead), 1 part sphagnum peat moss to 1 part perlite or sand (coarse), or 1 part sphagnum peat moss to 2 parts perlite or sand (coarse). The latter mixture is the preferred medium. B. liniflora will grow as a perennial if the planting medium is maintained in a moist condition but not when wet or waterlogged.

Plants That Grow Dry Condition

Fig. 4-11 Byblis Uni flora flower.

Temperatures

B. liniflora: 65-90°F (18-32°C). B. gigantea: 40-80°F (4-27°C). Grows best at a temperature of at least 70°F (21 °C), but less than 80°F (27°C).

Dormancy

  1. liniflora is an annual in its native habitat where soils dry out part of the year. In situations of permanently wet soils it is a perennial. B. liniflora will grow as a perennial under culture if grown in a sandy, well-drained planting medium which is kept moist but not soggy.
  2. gigantea dies back to its rootstock or base during the dry, hot Australian summer and grows during the cool, wet winter in areas where the soil dries out. In regions where the soil is moist, the plant is evergreen and does not die back to the rootstock.

Under cultivation it will not go dormant if kept moist, but the rate of new growth decreases during the winter. We maintain B. gigantea at 40°F (4°C) during the winter. With the arrival of spring and warmer temperatures, the rate of new growth increases, accompanied by profuse flowering until late fall or early winter when growth slows or ceases. The plants remain evergreen during the winter. The second, and subsequent springs, the plants will do one of two things. On the one hand, the new growth starts at the base at which time the top of the plant dies back to the base. Alternatively, the plant puts forth new growth from the top of last year's stem. When top growth occurs the plant must be physically supported for the season with a stake.

Water & Humidity

High humidity and moist soils are needed for B. liniflora at all times and for B. gigantea during the growing season. Keep the planting medium much drier during the dormant season.

Light

Although B. liniflora grows near the equator, it is shaded by other plants. Indirect or shaded sunlight is suitable and if using artificial lighting, start with 1200 foot candles for a 14 hour photoperiod for B. liniflora.

Some direct sunlight is good for B. gigantea during the season of active growth. If using artificial light, start with 1200 foot candles for a photoperiod of 14-16 hours during the active growing season and 800 foot candles with a photoperiod of about 9 hours during the resting period.

Pests

Aphids and fungus. See Chapter 8 for control. Feeding

See Chapter 7 for feeding directions. Miscellaneous

As B. gigantea plants grow older they tend to become straggly and rather unsightly. To remedy, cut off the top of the stem leaving 1-2 in. (2.5-5 cm) above the base, just before the season of active growth begins. Use the top for a cutting as outlined in the section on asexual propagation. You will not only gain another plant, but the new growth that develops from the stump left in the pot will produce a compact plant.

B. liniflora usually is not able to support itself vertically, after reaching a height of about 5 in. (13 cm). When a plant attains this height it usually falls to the soil or on other plants. When this happens cut off the upper part of plant and root as a cutting. The original plant will then produce side shoots.

PROPAGATION

Sexual Reproduction

To insure fertilization of the flowers in both Byblis species the stamen, which is yellow, must be vibrated gently to induce it to give up its pollen. A toothpick or similar object is a useful device to assist in releasing the pollen. Follow this procedure every afternoon for a few days. The flower will close as darkness falls and reopen the next day. The yellow pollen is easily seen on the surface of the stigma and petals when it is released.

As the seeds develop, the ovary of the flower will swell. In 4-6 weeks the seed pod of B. liniflora will become translucent and dehisce (split) to release the seed. B. gigantea seed pods do not dehisce upon maturity, but rather dry up retaining their seed.

  1. liniflora seed must be stored at least 2 months before planting. They can be dried for a few days at room temperature, placed in a vial or small plastic bag and stored under refrigeration for sowing at a later date.
  2. gigantea seeds are much more difficult to germinate than seeds of B. liinflora. In their native habitat, fire is apparently necessary to meet their dormancy requirement. Listed below are several methods which have been used successfully for treating seeds to promote germination.
  3. Place the seed, which has been soaked for a day in water, on damp planting medium. Scorch both the seeds and the soil surface with a flame from a Bunsen burner or butane torch until steam (condensed water vapor) is visible.
  4. Crumple a paper towel or a couple sheets of writing paper and place them on the surface of the damp planting medium on which seeds soaked in water for a day have been sprinkled. Ignite the paper. After burning the paper, carefully and thoroughly water the surface of the planting medium.
  5. Pour boiling water over the seeds which have been sprinkled on the surface of the planting medium. Repeat at least 4 times in succession to be certain that the seed and soil have been heated sufficiently.
  6. Soak a piece of filter paper or paper towel in a solution of 1 part of Gibberellin (75% Potassium Gibberellate salt) to 1000 parts of distilled water. Sprinkle the seed on the filter paper. The next day remove the seed from the paper and spread on the surface of the planting medium. Some growers prefer to leave the seed on the filter paper until it germinates, at which time the seedlings are transplanted to the planting medium. If the later procedure is followed, the filter paper must be kept damp using plain water.

After treating B. gigantea seed, follow the same procedure given for germinating B. liniflora seed. The seedlings of both species are very subject to damping off (fungus disease). To control the fungus, dust the seed with a fungicide. Keep humidity high, light bright and temperatures 70-90°F (21-32°C). Germination usually takes place within 2 months.

Byblis plants do not as a rule transplant easily, so if they must be transplanted do so while the plants are young seedlings. When transplanting, remove a ball of soil with the roots.

Asexual Reproduction

  1. gigantea
  2. Root cuttings: Carefully remove the soil on one side of the plant to locate a thick root. Remove about 2h of its length and recover the remaining root with medium. Cut the root section into 1 in. (2.5 cm) lengths. Place the pieces horizontally on the surface of sphagnum moss, preferably living. Keep the humidity high, light bright and the temperature 70-80°F (21-27°C). Several plantlets will usually develop along the length of each section within 6 weeks. After the plantlets have developed their own root system they can be severed from each other. This practice may be repeated yearly. In doing so, be sure to alternate sides of the plant for root removal.
  3. Stem cuttings: If the plants are given a dormant period the top 6 in. (15 cm) of the stem is cut off before the stem dies back to the rootstock. If the plants are not given a dormant period, a cutting of similar length is taken just before active growth begins. Place the cutting in sphagnum moss following the same directions as given for B. liniflora stem cuttings. The cutting will root in about 3 months. The remainder of the original plant will produce a new stem.
  4. liriiflora
  5. Stem cutting: B. liniflora will grow erect until it reaches 4-10 in. (10-25 cm), when it typically becomes top-heavy and topples to the ground, after which the terminal end of the plant will start to grow vertically again. A stem cutting about 2 in. (5 cm) long can be taken from the top of the plant before it tumbles over. The cutting, which should include the growing tip, is inserted in planting medium so that about V2 of the stem is below soil level. Keep the humidity high, light strong and at temperatures 70-85°F (21-29°C).

When rooted, the plant will start growing again. This procedure provides both a new plant and a bushier mother plant due to increased side branching.

2. Leaf cuttings: Leaves removed from B. liniflora plants are placed on damp planting medium. Under conditions of high humidity and bright light they will produce plantlets.

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Responses

  • sointu
    How do byblis reproduce?
    3 years ago
  • Semere
    How the Byblis plant reproduces?
    3 years ago

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