A type of thistle within the sunflower family, viscous globe-thistle at first appears a bit like a spiky dandelion, with the intimidating sphere of spikes eventually blooming into dainty white and purple florets. Its scientific name, Echinops spinosissimus, pays homage not only to the sharp spines on the buds but the thorns on the stems as well.

Mexican marigold (Tagetes minuta) has become naturalized around the world ever since Spanish colonization. It needs full sun to flourish, and planting it around your garden will resist deer, yet attract butterflies and hummingbirds for you. People with sensitive skin should avoid touching it as its irritant sap can cause contact dermatitis.

The song of india has distinctive leaves that stay green year-round. The plant's unique appearance and low-maintenance nature make it popular as a houseplant. The song of india is native to Indian Ocean islands including Madagascar, though not, oddly, to India itself.

The trademark feature of Asia-native plantain lilies is the numerous glossy oval leaves with deep parallel veins. The august lily is additionally decorated with strongly fragrant, trumpet-shaped, large white flowers, which are unique in the genus. Hosta plantaginea is one of the favorite cultivated plants for north-facing and shady gardens, but it also tolerates high humidity and temperatures.

Pink-sorrel (Oxalis articulata) is a perennial flowering plant that grows in temperate climates throughout its native South America. Pink-sorrel is popular for ornamental ground cover growth in China and Turkey. It is susceptible to fungal disease.

Coppery mesemb (Malephora crocea) is a flowering perennial herb native to Africa. The coppery mesemb is an ice plant that has been introduced in California in the United States and is considered a noxious weed there. In Arizona, the coppery mesemb is planted in landscaping due to its low maintenance needs and drought tolerance. In California, it is used as ground cover in areas that often see wildfires because coppery mesemb has very low flammability.

The goldenrain tree is grown around the world for ornamental purposes due to its appealing leaves, flowers, and seedpods and grows best in temperate climates. While popular for ornamental purposes globally, it is considered an invasive species in Florida.

A showpiece of the southern United States is the southern magnolia. This tree is known by its dark green oval leaves that are leathery in feel and its beautiful waxy flowers. The southern magnolia blooms are thought to symbolize dignity and nobility. White versions of the flower are commonly used in bridal bouquets to denote purity.

Italian bugloss is a short-lived perennial that is drought-tolerant and performs best in full sun. You can extend the life of this perennial by dividing plants every few years. However, it self-seeds easily and will likely send up new blooms each year.

Creeping phlox (Phlox subulata) is a flowering plant native to the United States. The Latin name Phlox subulata means needle-shaped, which describes its leaves. Creeping phlox is sometimes confused with marijuana due to its similar smell.

Yellow loosestrife (Lysimachia vulgaris) is an herbaceous perennial that will grow from 91 to 183 cm tall. It blooms from summer to fall with yellow cup-shaped flowers that have reddish-brown centers. Considered a noxious weed in some regions it is an aggressive plant that can spread by underground roots and profuse self-seeding.

The kumquat is a cold-hardy evergreen citrus tree. In spring, the kumquat produces sweet-smelling white flowers. Its small orange edible fruit, kumquats, can be eaten whole. It will grow nicely as a container plant.

The mother of thousands is a succulent plant native to Madagascar. Its unusually-shaped leaves have granted it other monikers like "alligator plant" and "devil's backbone." It reproduces via the "plantlets" that grow along the periphery of its leaves. Though enjoyed for its decorative value, mother of thousands can be invasive in arid environments.

There are two thoughts on the origin of the sweet william name. The first is that it was named after the Duke of Cumberland, William Augustus. The second is that the name came from the writings of Thomas Tusser, an English poet. In either case, this old-fashioned garden plant (Dianthus barbatus) is a lovely addition to any space.

Cape gooseberry (Physalis peruviana) is a perennial shrub species native to South America. This species has been cultivated by humans for a very long time, and can be traced to the Incan civilization. Cape gooseberry grows optimally in fertile, slightly acidic soil in full sun.

Common bean is one of the most widely produced cash crops in the world, with 23.6 million tons grown in 2016. China is the largest producer of common bean, accounting for 79% of the market share. While common bean is known as a staple food source, the leaves can be used to trap bedbugs and the beans are widely used in a type of fortune-telling called "pharmancy".

The peace lily gets its scientific name Spathiphyllum wallisii from a combination of the two Greek words ‘spath’ and ‘phyl’, which means spoon and leaves, respectively. The large graceful white spathe of the peace lily resembles a white flag, which is an international symbol of truce or peace.

The bradford pear is native to China but is considered invasive in the U.S. and Australia. Although it does not self-pollinate, it can become invasive by hybridizing with other plants to create fertile fruits that may seed in natural areas. The bradford pear creates large populations of fruits that are spread by birds and animals, readily rooting in disturbed areas. It also forms thick colonies that may compete with other native species for natural resources. Alternative plants include the Trident Maple and the Serviceberry. The bradford pear can be controlled by manually pulling young plants, and a range of herbicides such as oil-based herbicides, foliar herbicides, and both basal bark and stump treatments. It is important to remove seed sources as the weed can reinvade areas where it has been previously removed.

Rosemary is a herb with pale flowers and evergreen leaves. It gives off a distinctive scent and is used in cooking as well as in the making of scented perfumes, soaps, and candles. Rosemary is native to the Mediterranean region where evidence of its use by humans dates back at least 7000 years.

The blue passionflower is known for its distinctive bright blue petals with striped patterns. Originally native to South America, it grows as a vine with a long, meandering reach. It produces orange fruits with red pulp. The word "passion" is incorporated in both the common and scientific names because of the flower's cultural association with the Christian "Passion of Jesus" story.