petiole (syn. leafstalk)
The stalk of a leaf that attaches to the stem.
GardenWeb Glossary of Botanical Terms
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Petiole: A leaf stalk.
pH: A measure of acidity and alkalinity - also see neutral.
Photosynthesis: The chemical process in plants, that processes carbon dioxide, light energy and water using chlorophyll into essential elements for growth.
Petiole - The leafstalk that connects the blade to the twig.
Pinnate - Arranged like the vanes of a feather.
Samara - A winged fruit.
petiole The stack of a leaf. pH A measure of acidity or alkalinity. A pH of 7.0 is neutral. Smaller numbers indicate acidity, larger numbers indicate alkalinity.
Petiole - A stalk that attaches the leaf to the stem; a leafstalk.
pH - A measure of the acidity or alkalinity of a substance; a measure of the relative concentration of hydrogen ions and hydroxyl ions.
Petiole - Portion of the leaf which joins the leaf to the node of a stem.
Petal ...
petiole. The stalk connecting the leaf to a stem.
pH. A value used to express relative acidity or alkalinity.
phenoxy herbicides. A group of herbicides derived from phenoxy-acetic acid, including 2,4-D, 2,4,5-T, 2,4-DB, MCPA and silvex.
Petiole Leaf stalk.
Petiolule Leaflet stalk.
pH The scale used to denote the acidity or alkalinity (lime content) of a soil or growing compost. 6.5 pH is considered neutral and supports most plant life.
petiole The stalk of a leaf.
pH A scale measuring the acidity or alkalinity of a sample. What the pH scale actually measures is the hydrogen ion (H+) concentration present.
Winged petiole - petiole has a leaf-like or membrane-like extension along its length, as in Citrus x paradisi (grapefruit).
PETIOLE: A leaf stalk.
pH: pH is a measure of the acidity or basicity of a solution. Solutions with a pH less than 7 are considered acidic, while those with a pH greater than seven are considered basic.
Petiole: The stalk of the leaf. If the petiole is elongated, the leaves are likely not getting enough light. Time to move your African violet to a sunnier location!
Chlorophyll: The green plant pigment that facilitates photosynthesis.
PETIOLE - A leaf stalk.
pH - A scientific measure of acidity and alkalinity. Basically, pH is a measure of the amount of lime (calcium) contained in your soil. A soil with a pH lower than 7.0 is an acid soil, a soil pH higher than 7.
In the petiole, and large veins of leaves.
Nymphs
Late pink to mid July ...
Whole leaf without petiole
This is used for plants with sessile leaves (no stalk or petiole). Insert the cutting vertically into the medium. A new plant will form from the axillary bud. The leaf may be removed when the new plant has its own roots.
(Gr. pelta, target) shield-shaped, leaves that are shaped like a shield and attached to the stem at the center or by some point distinctly within the margin, and having the petiole inserted into the undersurface of the lamina not far from the center.
Insert a petiole or leaf wedge trimmed to size into the cutting mix by dibbling a hole, inserting the petiole and firming it in.
Begonias come from tropical and subtropical regions all over the world.
Most clematis will require staking so the twining leaf petioles can cling and climb upward, although it is not a problem if you choose to let the plants sprawl over the ground, fences, or wherever you'd like.
The stalks, or petioles, is where the main coloring is, but there will also be some coloration in the veins of the leaves. Many of the standard chards have a nice cream or white petiole which complements the green leaves.
Symptoms: Apple scab can be observed on leaves, petioles, blossoms, sepals, fruit, pedicels, and less frequently, on young shoots and bud scales.
The lower leaves are petioled and deeply lobed, quite similar to that of a dandelion. The upper leaves are irregularly toothed and clasping. White flowers appear in clusters at the top of a flowerstalk that can reach 6 to 18 inches in height.
The plant: This medium-sized hosta has shiny, slightly rippled, solid green leaves and highly unusual reddish-purple dots on the top and bottom of the petioles (the leaf stalks).
It bears dark green, alternate foliage with a distinctive shape—the winged petiole is roughly the same size as the leaf blade itself, creating an hourglass form.
Gripping the petiole, insert the bud, lower end downward, into the T opening on the stock. Press the flaps of the stock in place over the bud.
Petioles that have gone loose should also be removed by hand, although if these are difficult to pull off, leave them alone.
Two Seasons - semi-spreading head with very wide, white petioles. Resists bolting in warm weather. Michihili Jade Takii Spring A-1 - Makes two good varieties for the plantings. Siew Choy - grows excellent upright 18" head with light green stems.
Phyllodes- A flat expanded petiole that replaces the blade of a foliage leaf and which functions in photosynthesis.
Pioneer- A plant capable of invading a newly exposed soil surface and persisting there until supplanted by successor species.
A miniature 5-inch Pak Choi with white petioles and dark green leaves. Perfect for home gardeners and specialty growers. Well suited for summer months.
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Clematis are also considered a grasping vine, as they use their petioles, or leaf stems, to grab onto their support. These types of vines can most easily grasp onto wires or thin lattice pieces that are spaced closely together.
leaf -- An organ found in most vascular plants; it consists of a flat lamina (blade) and a petiole (stalk). Many flowering plants have additionally a pair of small stipules near the base of the petiole.
Referring to a heart-shaped leaf, where the stalk (petiole) is attached to the point of the heart.
Oblanceaolate
A leaf that's wider at the top than the bottom.
Larger hairy brick-red colored larvae consume greater amounts of leaf tissues, and nearly matured gray colored larvae devour entire leaves including petioles.
Phylloxera. Phylloxera are small, aphid-like pests that cause galls to develop on leaves and petioles early in the growing season. They are a common problem on pecan trees.
Motion also contributes to a finer texture when wind causes the patterns of light and shade to constantly change. Plants with leaves with long, flexible petioles and ornamental grasses that sway in the breeze provide a finer texture in motion than ...
Mild Greens
Asian Greens (Brassica rapa), including bok choi and tatsoi, form tender petioles that add a subtle crunch to salads.
Burdock (Arctium lappa)
Roots of non-flowering plants harvested after frost make a vinegar that is deep, and richly flavorful as well as a world-renowned tonic. Petioles of the leaves and the flowering stalk are also edible.
Maple Petiole Borer
Nectria Canker
Oak Anthracnose
Phomopsis Canker & Gall
Pine Needle Rust
Pine-Oak and Pine-Pine Gall Rusts
Powdery Mildew on Ornamental Plants
Root Rot of Azaleas and Rhododendrons
Rose Rust ...
are established (after 3 years), the harvest period should run 8 to 10 weeks, or until the stalks become thin, a sign that the plants' food reserves are low.
At least one third of the stalks should be left on the plant after the harvest.
The petioles ...
As a result, cells in the epidermis of the leaf become gorged with water. Raised blisters appear, cells burst and water-soaked and corky spots develop. Corky spots or ridges also may develop on petals and along stems and leaf petioles.
 See also: Plant, Leaf, Flower, Spring, Soil
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