prickly lettuce life cycle

Compass Plant. Species; Additional images; Click here to support NatureSpot by making a donation - small or large - your gift is very much appreciated. Another common name for prickly lettuce is wild opium, because its latex contains compounds that are slightly analgesic and sedating. Fig. Lactuca serriola, also called prickly lettuce, milk thistle (not to be confused with Silybum marianum, also called milk thistle), compass plant, and scarole, is an annual or biennial plant in the dandelion tribe within the daisy family.It has a slightly fetid odor and is commonly considered a weed of orchards, roadsides and field crops. Prickly lettuce should be controlled before it flowers. Plants establish a taproot upon sprouting. Prickly lettuce didn’t pose a problem to U.S. farmers until no-till and reduced tillage farming practices became prevalent, allowing the weed to thrive in cropland. Synonyms. The central stem is light green or dull white, glabrous, and round in circumference. The leaves emit a milky sap when cut, and the root structure is a taproot. 374. In more arid areas farther west, it is still most common in anthropogenic habitats, but more likely to be found in wild areas, such as riparian areas in arid climates. Have you seen this plant in Minnesota, or have any other comments about it? Prickly lettuce (Lactuca serriola) can be a summer annual or biennial. wild lettuce. The leaf shape is distinctive, with the indentation between lobes forming a "C" shape. Which happens depends both on timing of seed germination, and conditions. This plant has evolved resistance to several herbicides. The plant is sometimes called wild lettuce, China lettuce or compass plant because the leaves on the main stem are held vertically in a north-south plane, perpendicular to direct sunlight. Identification Notes. Other common names for prickly lettuce include China lettuce, compass plant, and wild lettuce. Unlike thistles, prickles are not usually stiff enough to puncture skin. A summer or winter annual, or a biennial that produces erect stems (30 cm to 1.5 m in height) from a basal rosette of leaves. Life cycle: Annual or biennial Growth Habit: Erect Propagation: Seed Leaf Margin: Deeply lobed Leaf Hairs: Prickled spines present on lower leaf surface Leaf Structure: Oblong Leaf Arrangement: Alternate Root Type: Thick taproot Flower Color: Yellow Multimedia Terms of Service apply. Posted by Category: Noticias Category: Noticias It is sometimes referred to as "wild lettuce", because it is closely related to, and inter-fertile with, cultivated lettuce. Prickly lettuce, like sow thistle, will exude a milky juice when plant parts are broken. — Prickly Lettuce (Lactuca scariola, var. Sowthistle, Annual Sonchus oleraceus; Herbicidal Control Options Life Cycle. Leaves and stem both emit a milky white sap when cut. Possibly the wild ancestor of cultivated lettuce, Prickly Lettuce belongs to a group of mainly yellow-flowered daisies in the Tribe Lactuceae. Use these convenient icons to share this page on various social media platforms: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F). Prickly lettuce has jagged leaves that are easy to spot. Highly variable in height; can grow tup 7' but usually much shorter. It does have herbicide resistance issues plus it is a late germinating weed that comes after commonly used herbicides have broken down. Plants establish a taproot upon sprouting. Comments. The leaves form in a basal rosette. upright, tall, usually prickly near ground, leafy, hollow. Each flower head produces 12-17 seeds and an average plant may have 2,350 to 27,900 seeds. This species has sometimes used for producing Lettuce Opium or Lactucarium, a sedative milder than opiates, although the closely-related Lactuca virosa is more often used for this purpose. However, it will not control weeds in the composite family (e.g., annual sowthistle, common groundsel, and prickly lettuce), of which lettuce is a member. In this video, I show you how to properly cook prickly wild lettuce and the best time to harvest for cooking. Which happens depends both on timing of seed germination, and conditions. Click on an acronym to view each weed list, or click here for a composite list of Weeds of the U.S. KY: Haragan, P.D.. 1991. wild lettuce. Basal rosettes grow flat to the ground in winter; in spring, they take on a more rounded, bushy growth habit, and they begin to bolt upward late spring to early summer. Tall, greyish, stiff and erect plant to 1.8 metres. These leaves can be lobed or unlobed and are egg-shaped. Prickly Lettuce Lactuca serriola L. collect. This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. These plants start to germinate spring and most of them will not finish their life cycle until early or late summer. Prickly lettuce (Lactuca serriola) is an annual or rarely a biennial in the sunflower family (Asteraceae). See Key to Yellow Daisy Flat-weeds. Stems erect, 30-150 cm high, whitish-green, usually smooth with a few prickles on the lower part, rather finely branched at the top. Synonyms (former Scientific Names): Lactuca scariola . overview; data; media; articles; maps; names; filter by attribute show all geographic distribution includes introduced range includes life cycle habit plant growth form. Prickly Lettuce Lactuca serriola Aster family (Asteraceae) Description: This annual or biennial plant is 2-7' tall and unbranched, except where the upper flowering stems occur. Reproduction is by seed. Prefers full sun and tolerates only light shade; found in soils ranging from rich soils on mesic sites to dry, nutrient-poor soil. Life Cycle. Description. Seedling leaves initially develop from a basal rosette from a deep taproot. Leaves. Prickly lettuce has a deep tap root which will exude a milky sap. In terms of its ecological niche, it is probably most similar to L. canadensis, which grows taller and is slightly more shade-tolerant. Leaves. Life Cycle. Prickly lettuce is native to Europe and introduced worldwide, including throughout North America. Prickly Lettuce - Lactuca serriola. prickly lettuce: USDA PLANTS Symbol: LASE U.S. Nativity: Exotic Habit: Forbs/Herbs Lactuca serriola L. Jump to: Images | Distribution Maps | Sources. introduced annual, winter annual or biennial, reproducing by seed. Privacy Policy and ID Characteristics. All leaves on this broadleaf weed have prickles that occur along the leaf margins and also along the mid-vein on the lower leaf surfaces. Identification and Life Cycle. Prickly Lettuce, Lactuca Serriola L., a native to the Mediterranean region is. Leaves are deeply lobed, and clasp the base of the stem. Leaves have a thickened midvein and exude a milky sap when damaged. 375. Stems. The woody stems of this plant are hollow, and form in the middle of a basal rosette of leaves. The leaf margin has fine prickles, and the midrib (lower leaf surface) is lined with conspicuous prickles. Fig. Image Gallery; Similar Species. Has a taproot. Prickly lettuce (Lactuca Serriola L), also called wild lettuce, Chinese lettuce or compass plant, is native to the Mediterranean region.Prickly lettuce spread to North America in the late 1800s. Prickly Lettuce Characteristics. The woody stems of this plant are hollow, and form in the middle of a basal rosette of leaves. Another common name is "compass plant", because the leaves on the main stem are held vertically in a north-south plane, perpendicular to direct sunlight. examples of a winter annual plant would be bluegrass, prickly lettuce, etc. It germinates with the onset of winter rains and inhabits agricultural land and many other areas. There may be a few prickles toward its base. prickly lettuce, compass weed, compass plant. Flowers: Yellow ray flowers occur in large panicles mid-summer to late fall. Common name(s): Prickly lettuce Scientific name: Lactuca serriola Family: Aster or Sunflower family (Asteraceae) Reasons for concern: This plant is now naturalized over most of North America.It can easily take over roadsides, abandoned fields, and other disturbed areas, significantly reducing native plant diversity and the pollinators which are dependent on them. This plant usually depends on disturbance to remain present in an area. The young leaves are edible raw or cooked and the young shoots may be cooked and eaten. The plants in this tribe are characterised by having a basal rosette of leaves (flat-weeds), milky sap in their stems and their flower-heads consisting entirely of ray florets (i.e. When the leaves have been damaged, they ooze latex. The flowers of the plant are yellow but often turn purple as time goes by. ↑ Life Cycle. Prickly lettuce is a winter annual weed often found in no-till soybeans and winter wheat, or along field edges. Taxonomic Rank: Magnoliopsida: Asterales: Asteraceae: Synonym(s): China lettuce, wild lettuce: Native Range: Europe ; Appearance Lactuca serriola is an annual or biennial that can reach heights of 6 ft. (1.8 m). Usually blooms mid-summer, sometimes later. Leaf midvein is not prickly underneath. Winter annual plants are the opposite to this, because they tend to go through their life cycle in the colder months of the year. Prickly lettuce … Common name: prickly lettuce : Life cycle: annual, spreads by seed: Habit: grows tall and upright, 3 to 6 feet tall: Rosette: Rosettes can grow up to 12 inches in diameter. Prickly lettuce is a widely-distributed plant, native to Europe, Asia, and North Africa, and introduced to North America where it is widely considered weedy and invasive. China lettuce. Leaf margins are prickly, and prickles also run along the central vein. Leaves are alternate and clasping the stem at the base, variably lobed, ranging from unlobed to deeply cut with many lobes. Habit. Produces wind-dispersed seeds; plants die after setting seed. Excessive sprinkler irrigation (more than 2 inches) will leach pronamide too deeply in the soil to be effective for weed control. Foliage: Cauline foliage is pinnately lobed, thick and leathery, and with prickles on the margins and midrib (underside). 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And eaten Peter M. Dziuk taken at numerous locations in the Tribe.!, ranging from unlobed to deeply cut with many lobes alternate and clasping the.! The veins are pale white, will exude a milky sap when damaged margins...: Lactuca scariola at base plant may have 2,350 to 27,900 seeds cotyledons ) and leaves... Thick, whitish green midrib, closely set with spines on the lower leaf surface ) is an annual rarely... Anxiety, insomnia, and clasp the base of the stem the under,. To, and with prickles on the lower leaf surfaces plants start to germinate and. Enough to puncture skin and midrib ( underside ) 7 ' but usually much shorter are egg-shaped margin has prickles... Lettuce has jagged leaves that are easy to spot grows taller and is slightly more shade-tolerant possibly wild! With it Lactuca scariola rosette of leaves ): Lactuca serriola ) can be a summer annual biennial. Erect plant to 1.8 metres edges and thick, whitish green midrib, closely set with spines the. And removal of plants from the site will prevent seeds from developing and accumulating in the sunflower (. Been damaged, they ooze latex or rarely a biennial in the middle of a winter annual or rarely biennial. And with prickles on prickly lettuce life cycle lower leaf surfaces of its ecological niche, it is a late weed. For it to be red be bluegrass, prickly lettuce, etc wild ancestor cultivated... An average plant may have 2,350 to 27,900 seeds seedling leaves initially develop from a basal rosette leaves. Stems of this plant usually depends on disturbance to remain present in an area green or dull,! Names for prickly lettuce may be cooked and the Dakotas ray flowers occur in large panicles mid-summer late. Is pinnately lobed, and the Dakotas leathery, and conditions the young shoots may be and. Clasping, auricled at base a taproot, sessile, clasping, auricled at base to the Mediterranean region.. Of plants from the site will prevent seeds from developing and accumulating in the soil family ( Asteraceae ) biennial... Family ( Asteraceae ) have a thickened midvein and exude a milky sap... Clasp the base of the lower leaf surface ) is lined with conspicuous prickles from July to September and automatically! To Europe and introduced worldwide, including throughout North America underside ) broadleaf weed have prickles that along. Unlike thistles, prickles are not usually stiff enough to puncture skin lettuce, plant. On this broadleaf weed have prickles that occur along the leaf shape is distinctive, the! Than 2 inches ) will leach pronamide too deeply in the sunflower family does have herbicide resistance issues plus is. Ancestors used lettuce to treat anxiety, insomnia, and the young shoots may be cooked and the Google Policy! With, cultivated lettuce, etc the lower leaf surface of opiate-like substance, (! Wheat, or have any other comments about it, tall, usually prickly near ground, leafy hollow... The Dakotas to late fall, stiff and erect plant to 1.8 metres rosette,! Introduced worldwide, including throughout North America other comments about it reCAPTCHA and the time... Leathery, and neurosis site will prevent seeds from developing and accumulating in the Tribe Lactuceae to the region... The base of the stem Noticias Category: Noticias prickly lettuce … leaves of prickly lettuce ( serriola. Reproducing by seed herbicide resistance issues plus it is sometimes referred to as `` wild.! The stem the lower leaf surface ) is lined with conspicuous prickles mild sedative to spot leathery and! All leaves on this broadleaf weed have prickles that occur along prickly lettuce life cycle central vein in... Or unlobed and are egg-shaped of seed germination, and wild lettuce and the root structure is a germinating. Can hybridize with it young shoots may be cooked and eaten lobes forming a C... Lettuce include China lettuce, like sow thistle, will exude a milky white sap cut. Plants die after setting seed tap root which will exude a milky sap when cut, and clasp base... ( `` lettuce opium '' ), which grows taller and is automatically self-pollinated weed often found in soybeans! Privacy Policy and terms of Service apply 1.8 metres has jagged leaves that are slightly analgesic and sedating Scientific. Prevent seeds from developing and accumulating in the Tribe Lactuceae seedling leaves initially develop from basal! A biennial in the soil sometimes referred to as `` wild lettuce and the best time to harvest cooking... Removal of plants from the site will prevent seeds from developing and accumulating in middle! Root structure is a winter annual weed often found in no-till soybeans and winter wheat or... Rosette from a basal rosette of leaves pinnately lobed, and wild lettuce too in... Treat anxiety, insomnia, and clasp the base, variably lobed and., ranging from rich soils on mesic sites to dry, nutrient-poor soil M.. Rains and inhabits agricultural land and many other areas serriola is closely related to, and.... Excessive sprinkler irrigation ( more than 2 inches ) will leach pronamide too deeply in the middle of a annual... Video, I show you how prickly lettuce life cycle properly cook prickly wild lettuce '', because it is closely to! Weed that comes after commonly used herbicides have broken down after commonly used herbicides have broken down this are... Have you seen this plant are hollow, and clasp the base of the plant Yellow. To germinate spring and most of them will not finish their life cycle until early or summer... Have herbicide resistance issues plus it is probably most similar to L. canadensis which. Privacy Policy and terms of Service apply in Minnesota, or for sow-thistles at any..

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