Purslane can grow indoors, offering a continuous supply of fresh, edible greens. Its low-maintenance nature makes it an appealing choice for both novice and experienced gardeners. Growing purslane inside allows for enjoyment of its unique flavor and nutritional benefits year-round, regardless of outdoor weather conditions.
Optimal Indoor Growing Conditions
Light
Purslane thrives in abundant sunlight, requiring a minimum of six to eight hours of direct light daily. A south-facing window provides consistent natural light. If natural light is insufficient, supplement with a grow light positioned six to twelve inches above the plants to prevent leggy growth.
Soil and Drainage
Well-draining soil is essential for indoor purslane, similar to what succulents prefer. A sandy, gritty mix or a standard potting mix amended with perlite or coarse sand ensures proper aeration and prevents waterlogging. Purslane’s roots are susceptible to rot in overly wet conditions.
Watering
Purslane is a drought-tolerant succulent, storing water in its fleshy leaves and stems. It prefers the soil to dry out completely between waterings, so err on the side of underwatering. Check the top inch of soil; if dry, water thoroughly, allowing excess water to drain. Watering frequency varies, typically ranging from once a week to every other week.
Temperature and Humidity
Purslane prefers warm temperatures, thriving between 60°F and 90°F (16°C to 32°C), consistent with average indoor environments. It is sensitive to cold, so keep it away from drafts or sudden temperature fluctuations. Standard household humidity levels are usually sufficient.
Container Choice
Selecting the right container is important for indoor purslane, primarily to facilitate excellent drainage. Pots with drainage holes are essential to prevent root rot. Terracotta pots are often a good choice because their porous nature allows for better air circulation and helps the soil dry out more evenly. A 12-inch container can accommodate several plants.
Planting and Ongoing Care
Starting From Seed or Cuttings
Starting purslane indoors can be done using either seeds or cuttings. For seeds, sow them shallowly, about 3mm deep, on the surface of a moistened seed-starting mix, as they require light to germinate. Germination typically occurs within 7 to 15 days under warm conditions, ideally between 68°F and 95°F (20°C to 35°C). When propagating from cuttings, select a healthy stem about six inches long, remove leaves from the bottom few inches, and place the cutting directly into well-draining soil or a glass of water until roots form. New growth can appear quickly.
Fertilizing
Purslane is not a heavy feeder and thrives with minimal fertilization. If your potting mix is rich in organic matter, additional fertilizer may not be necessary. To support continuous growth, apply a balanced liquid fertilizer, diluted to half strength, about once a month during its active growing season. Avoid over-fertilization, as it can lead to excessive foliage growth at the expense of flavor and plant health.
Pruning and Maintenance
Regular pruning encourages bushier, more compact growth and deters legginess, especially if light levels are not consistently high. Snip off the top inch or two of longer stems with clean scissors to promote branching and a fuller appearance. Removing yellowing or diseased leaves helps maintain plant vigor. This routine maintenance also serves as a method of harvesting, stimulating new growth.
Common Indoor Issues
While generally resilient, indoor purslane can encounter a few common problems. Leggy growth, characterized by long, stretched stems with sparse leaves, indicates insufficient light. Increase light exposure through a brighter window or supplemental grow lights to correct this. Root rot is another common problem, almost always caused by overwatering. Ensure proper drainage and allow the soil to dry out between waterings to prevent this fungal issue.
Harvesting and Enjoying Purslane
Harvesting purslane is straightforward and encourages more foliage production. Snip off individual leaves or entire stems with clean scissors, cutting just above a leaf node to promote new growth. Regular harvesting, especially using the “cut-and-come-again” technique, ensures a continuous supply of fresh, tender leaves. Avoid removing more than one-third of the plant at a time to maintain vigor.
Purslane is a versatile and nutritious addition to many dishes. Its slightly tangy, lemony flavor and succulent texture make it excellent raw in salads, adding a refreshing crunch. It can also be lightly cooked in stir-fries, soups, or omelets, where its mucilaginous quality can act as a natural thickener. Beyond its culinary appeal, purslane is rich in Omega-3 fatty acids, vitamins A and C, and various minerals, making it a healthy choice.