Sisal (Agave sisalana) is a succulent plant whose yellow flowers bloom along a stalk rising up to 9 m tall and have an unpleasant scent. The flowers, stalk, basal rosette and sap of this plant are edible. Plant in full sun outdoors or place in a bright, sunny location indoors.

The common lantana is a flowering plant that grows best in tropical environments. It spread outside the Americas when the Dutch brought it to Europe. The plant is generally regarded as an unwanted weed that reduces biodiversity. Additionally, it is toxic to livestock and harms the output of farmland.

Solanum campylacanthum is a robust, spiny shrub known for its angular, curved thorns and lush, broad leaves. Its dainty flowers bloom into yellow berries, offering a stark contrast against the greenery. Adapting to survive in arid regions, solanum campylacanthum's thick foliage provides shade, conserving moisture for resilience against dry climates.

The chinaberry tree is considered an invasive species in many areas because of its tendency to grow into impassable thickets and crowd out other plants. The entire chinaberry tree is poisonous to humans and many other animals, although cows and some birds have no problems eating the fruit.

Coffee senna (*Senna occidentalis*) is a perennial shrub that prefers warm and humid environments. It is sometimes considered an invasive weed that grows in open woodlands, waste areas, and roadsides. It blooms in spring with yellow flowers, followed by brown fruit in late summer and early fall. Seeds can be used as a coffee substitute, although it does not contain caffeine.

Yellow oleander is extremely toxic and many cases of accidental poisonings have been recorded. The toxic oils found in this plant are sometimes used in pest control measures. However, the Cascabela thevetia does have significance in some religious ceremonies, specifically the worshiping of Shiva, a Hindu deity.

Neem tree (*Azadirachta indica*) is a flowering tree species related to mahogany and with an appearance similar to that of the chinaberry tree. For centuries, it has played an important role in Indian culture. Commercially, the neem tree is used to produce neem oil, pesticides, and cosmetics.

Jerusalem thorn (Parkinsonia aculeata) is a plant species that can also be commonly known as palo verde, palo de rayo or jerusalem thorn. The common name jerusalem thorn is a mistranslation of the word girasole, which means turning toward the sun.

Senna siamea (Burmese: မယ်ဇလီ, mezali; Thai: ขี้เหล็ก, khilek), also known as Siamese cassia, kassod tree, cassod tree and cassia tree, is a legume in the subfamily Caesalpinioideae. It is native to South and Southeast Asia, although its exact origin is unknown. It is a medium-size, evergreen tree growing up to 18 m with yellow flowers. It is often used as shade tree in cocoa, coffee and tea plantations. In Thailand it is the provincial tree of Chaiyaphum Province and some places in the country are named after it. Leaves are alternate, pinnately compound, with slender, green-reddish, tinged axis and 6 to 12 pairs of leaflets on short stalks, rounded at both ends.

The castor bean is important for its oil which is used as a lubricant, biodiesel ingredient, and rodent repellent, among other applications. The plants are now commercially planted globally, with India producing nearly 75% of the world's castor oil. Castor beans cannot be eaten because they contain a potent poison that's released if the seed is broken.

White leadtree (Leucaena leucocephala) is a small tree native to Mexico and Central America. Planting white leadtree makes the soil fertile as other Legumes do. It has been also used for livestock feed and firewood. This tree is also called a "miracle tree" for its many uses.

Pencil cactus (Euphorbia tirucalli) is a small tree shrub that grows best in warm arid climates and is named for its pencil-sized succulent branches. Pencil cactus is native to black clay soils in Africa and can be poisonous if ingested. It produces a latex compound that can be poisonous and cause blindness.

Juncus oxycarpus is a perennial grass-like species characterized by its upright, cylindrical, and hollow stems, known as culms. Typically found in wetlands and marshy areas, juncus oxycarpus adapts well to saturated soils. Its dark brown, sharply pointed fruiting bodies provide a key identifying feature, contrasting with its dense clusters of greenish inflorescences that have a bristly appearance. Juncus oxycarpus’s capability to thrive in water-logged conditions demonstrates a specialized evolution for wet habitats.

Pigeon pea (Cajanus cajan) is a woody perennial shrub that will grow to 4 m tall. Flowers attract butterflies and bees. Edible seeds, seedpods, stems and shoots. A nitrogen-fixer, it improves the quality of the soil where it is planted. Grows in full sun with moist, well-drained soil. It is drought-tolerant and will grow in a variety of soil conditions.

This tropical, evergreen shrub grows erect and blooms with bold dark blue or purple flowers through both summer and autumn, making it a lovely choice for hedges, borders, and walls. Though bush clockvine most commonly grows as a bush, it can be 'trained' to grow like a vine (as implied by the name).

Lambsquarters has many other names, including pigweed, goosefoot, and bacon weed. This plant seems to appear out of nowhere and is considered by many to be a pesky weed. However, the greens of this plant are edible, can be prepared similar to spinach, and are packed with nutrients.

Native to tropical Africa and the Arabian peninsula, the senegal date palm (Phoenix reclinata) is among the palm trees naturalized in Florida and some Western Atlantic islands. It can produce multiple trunks which can grow up to 35 feet. Senegal date palm produces long, pale yellow florets and edible orangish-red dates.

Argemone mexicana has been naturalized in many parts of the world. It is extremely tolerant of drought and poor soil, but is poisonous to grazing animals. Its seed pods secrete a pale yellow latex when cut open. In India, the mexican prickly poppy is used in the Holika Dahan festival, in which adults and children worship by offering flowers.

Guava (*Psidium guajava*) is a fruit-producing evergreen shrub that grows natively in the Caribbean region and South America. Guava attracts the honey bee and other insects, and guava fruit is edible. Additionally, guava wood is used for smoking meat.

Pink bauhinia (Bauhinia monandra) is a deciduous tree that will grow to 7 m tall. It blooms from spring to fall with clusters of pinkish white orchid-like flowers with streaks of magenta. Blossoms attract butterflies. The leaves are shaped like butterfly wings and it is sometimes referred to as a butterfly tree. Grows in full sun with low moisture.