Plants
Articles about plant species, botany and vegetation.
Pecan
Pedaliaceae
Pedaliaceae: the sesame family of flowering plants
Pennyroyal
Pennyroyal (Mentha pulegium): description, history, uses and safety
Peony
Peony (Paeonia): botany, cultivation and cultural importance
Pepper
Pepper: Capsicum, Piper, and other plants called 'pepper'
Peppermint
Peppermint (Mentha × piperita)
Perennial
Perilla
Perilla (shiso): description, cultivation, culinary uses and safety
Periwinkle
Periwinkle: molluscs, plants, color and cultural uses
Persian lime
Persian lime (Citrus × latifolia): description, cultivation and uses
Pest control
Pest control: methods, history, and environmental considerations
Petal
Petal (flower structure)
Petasites
Petasites (butterbur): appearance, habitat, uses and safety
Petunia
Peyote
Philodendron
Phloem
Phloem: living tissue that transports sugars, nutrients, and signals in plants
Phormium tenax
Phototropism
Phyllotaxis
Phyllotaxis: patterns and principles of leaf arrangement
Physalis
Physalis: the lantern‑husk fruit (groundcherries, tomatillos, cape gooseberries)
Phytoplasma
Phytoplasma: obligate plant‑pathogenic bacteria
Phytoremediation
Phytoremediation: plant-based cleanup of contaminated soil and water
Pinaceae
Pine
Pineberry
Pinus pinaster
Pinus pinaster — maritime pine (pinaster pine)
Piperaceae
Piperaceae (pepper family): overview, traits, uses and diversity
Piperales
Piperales: the botanical order containing pepper, kava, and related plants
Pistacia lentiscus
Pistacia lentiscus (mastic tree) — Mediterranean shrub valued for its resin
Pitcher plant
Pitcher plant: pitfall-trap carnivorous plants and their ecology
Planaria
Planaria — freshwater flatworms noted for simple bodies and regeneration
Plant
Plants: their biology, structure, diversity and human uses
Plant anatomy
Plant anatomy: internal structure, tissues, and methods
Plant breeding
Plant breeding: principles, methods, history and societal importance
Plant City, Florida
Plant City, Florida — overview, history, and community highlights
Plant community
Plant cutting
Plant hormone
Plant hormone (phytohormone): roles, types, and significance
Plant morphology
Plant pathology
Plant pathology (phytopathology)
Plant physiology
Plant physiology: functions, processes, and applications
Plant propagation
Plant propagation: methods, uses, and practical guidance
Plant sap
Plant sap: composition, transport, functions, and distinctions
Plant stem
Plant Stem: Structure, Function, and Types of Above- and Below-Ground Stems
Plantaginaceae
Plantain
Plantain (cooking banana): botany, uses, history and cultivation
Plantation
Plantation: large-scale specialized agriculture and its impacts