What to know before buying a new houseplant

Before you buy a houseplant, check that the room can meet its light needs, that the plant itself looks healthy, that the pot can drain and that you can keep up the watering and humidity it requires. A plant that suits the room and your schedule is far more likely to settle in than a striking one that does not.

Those checks take only a few extra minutes at the shop or garden center, and they prevent most of the disappointment that comes with a new plant.

Measure the space and your schedule

Start with the spot you have in mind, not the plant. Note how many hours of bright light reach it, which direction the window faces and whether the spot sits near heating vents, air conditioning or a cold draft. Check the plant's mature size on its tag or care information, because a plant that fits on a shelf now may need much more room later. Consider how easily you can reach the plant to water it. A large plant in a heavy pot is harder to move for watering and cleaning, so think through the practical side before you commit. Think about humidity and airflow too. A bathroom with a window can suit humidity-loving plants, but a spot beside an open door or a busy vent may suit neither. Gentle, steady air movement helps leaves, while hard drafts dry them out and chill them.

Then compare the plant's care needs with the time you can give it. Snake plants, ZZ plants and most succulents tolerate missed waterings and can wait between drinks, while ferns and other moisture lovers need the soil checked several times a week and more humidity than a dry room usually provides. Read the care tag for the light, water and humidity the plant lists, and be honest about whether you will meet those needs through an ordinary week.

Inspect the plant closely

Look at the whole plant before you pay. Check the top and underside of leaves, the joints where leaves meet stems and the soil surface for webbing, sticky residue, tiny moving specks or white cottony clusters. Small winged insects that rise when the plant is moved can signal fungus gnats. Look for even color, firm stems and no large areas of yellow or brown leaves.

Ask a staff member before you gently lift the plant from its pot to check the roots. Healthy roots are firm and white to light tan. Roots that are dark, mushy or unpleasant smelling are a warning that the plant may have been overwatered. Check the leaves for signs of recent damage as well. Small holes, crispy edges and bent or creased leaves can come from careless handling, shipping or a crowded display, and they do not always mean the plant is failing. Judge the plant as a whole rather than on one damaged leaf.

Think about the pot and the soil

The container tells you a lot about how the plant will be watered. Make sure it has drainage holes, or plan to use a nursery pot inside a decorative container. Avoid a pot much larger than the root ball, since excess soil stays wet longer than the plant can use. Soil that is soaking wet in the shop may point to uneven watering there. Plants that have dried out completely may need a thorough soak, because dry peat-based mixes can repel water at first. Plants that arrive in very wet, compacted soil need the reverse: hold off on watering until the top inch has dried.

Ask about care and transport

Staff members can usually tell you how the plant was kept, including its light, temperature and watering schedule. A plant grown in a bright greenhouse may need adjustment when it moves to a darker home, and that change is normal rather than a sign of poor quality.

Cold exposure is a separate concern. Tropical foliage can be damaged by low temperatures, so wrap the plant for the trip home in cold weather and avoid leaving it in a car on a freezing day. Ask also whether the plant is toxic to pets or children, since many common houseplants can cause irritation or illness if eaten. If a child or pet chews a plant, call a poison control center or a veterinarian at once, and have the plant's name ready.

Plan the first few weeks

Give the new plant time to settle before making big changes. Keep it apart from other plants for two to four weeks while you watch for pests, and place it in the spot you intend to keep rather than moving it around. Expect some leaf drop as the plant adapts, which is common after a change in light and humidity. Hold off on repotting unless the roots are visibly crowded or the soil is in poor condition, and hold off on fertilizer too. The plant will show its response over several weeks, which tells you more than the first few days. Keep a simple record from the first day, noting the light, the watering dates and any changes. A running log makes it much easier to tell whether the plant is settling in or needs an adjustment.

Before you leave the shop, write down how the staff say the plant is watered and what its tag says about light. Treat that schedule as a starting point, since your room will dry the soil at its own pace. Check the soil at home before the first watering, and let the soil rather than the date decide when the plant gets water.