Boston Fern (nephrolepis exaltata): Your plant looks like a type of Nephrolepis, commonly known as Boston Fern, popular as a houseplant or as a patio plant. Needs bright indirect light indoors or partial or full shade outdoors and regular water. Part of the sword fern family of plants, feed with a slow-release fertilizer formulated for container plants. Feed once a month. In your area, this is a perennial plant for the shade garden.
English Ivy (hedera helix): This looks like English ivy. In the open, ground ivy can cover acres or climb tall trees, but it is easily kept small in a container or by hard trimming. There are many varieties differing in size, leaf shape or color.
Splitleaf Philodendron (monstera deliciosa): Grown as a house plant most places, this survives outside in areas that are virtually frost free. In the wild, this epiphyte can grow 65 feet tall. Indoors provide bright, indirect light, regular water and feed with a slow-release fertilizer. Outdoors provide partial or full shade.
Wandering Jew Striped Inch Plant (tradescantia zebrina): Your plant is a Tradescantia, usually known as a Wandering Jew. Some come as green, yours is the purple, striped cultivar. In good conditions, it will produce pale lavender, pink, or dark purple flowers. As a houseplant, this grows best in bright, indirect light. It should be watered when the top half inch of soil feels dry to the touch. Feed with a plant food formulated for foliage house plants. Cuttings root easily in a jar of water.
Birdsnest Or Dwarf Snake Plant (sansevieria trifasciata hahnii): Your unusual Sansevieria is a low-growing succulent prized for its dramatic marked foliage that forms a vase-like rosette of elliptic, spirally arranged leaves. Grows in clumps and suckers readily - each plant measures about 12 inches by 12 inches. It is very water thrifty and only needs to be watered about twice a month during its growth season and reduce to once a month during its winter dormancy. Indoors needs bright…
Guava (psidium sp): It is possible the flower is from a guava tree (Psidium species). We cannot be completely sure without seeing a fruit from the tree, but the flower with its distinctive stamens certainly looks like a Psidium species. If it is a guava it should produce fruit by the second or third year of growth. It does best in full to filtered sun and slightly moist soil with good drainage.