Plants can move when their cells grow as a response to either light or gravity, which they are able to detect even as seedlings. This type of movement is slow and permanent. Other kinds of plants are capable of quick, momentary bursts of movement, which is due to hydraulics.Know More
Phototropism occurs when the pigment phototropin absorbs light. This pigment is present in the tips of plant shoots, which are the sources of directional growth in the plant. Once phototropin absorbs light, the growth hormone auxin is released, causing the cells of the plant to divide. Auxin directly responds to the direction of light, thus allowing the plant to grow where light is strongest.
Gravitropism, which also utilizes auxin, allows a plant to grow either toward or away from gravitational direction. This process is regulated by statoliths, or small packages of starch that are present in the shoot tips and roots of the plant. When the plant is tilted, the statoliths settle on whichever side gravity dictates. Auxin is then released in that direction.
Some predatory plants such as the Venus flytrap move as a response to physical stimulus. Tiny hairs cover the Venus flytrap's surface and allow the plants' cells to sense pressure. Once enough pressure is reached, chloride ions are released that allow an electrical signal to travel throughout the plant. This causes potassium ions to enter and exit cells. Water then follows, as parts of the plant function as levers.Learn more about Outdoor Plants & Flowers
To grow loofah seeds, choose a garden spot, place the seeds in trays and wait for the seedlings to germinate before planting them outside for further growth. You need a trellis or fencing, a plastic seed starter six-pack, a container, mulch and fertilizer to complete this project. Loofah seeds take roughly 140 to 180 days to fully mature.Full Answer >
Grow wave petunias by choosing a good location, preparing the soil, planting the seedlings, watering and fertilizing. You need a spade, soil amendments, seedlings and fertilizer.Full Answer >
Grow a crop of beets by preparing the seeds, choosing a good location, preparing the soil, planting the seeds, thinning the seedlings, and mulching and watering the plants. You need beet seeds, loamy or sandy soil, mulch and water.Full Answer >
According to plant and seed company Burpee, sunflower seedlings should be pruned in order to create a sturdier and more wind-resistant adult plant. Seeds must initially be planted in groups of 2 to 3 seeds. When the seedlings reach a height of 3 to 4 inches, all but one strong seedling is snipped off. Extra garden soil is then carefully filled in around the one remaining seedling.Full Answer >