Spathiphyllum 'Mauna Loa': The classic.

The peace lily everyone's grandparent had. Reliable, tolerant, generous with flowers.

At a glance

Mature size

2–3 ft / 60–90 cm

Leaf

Glossy dark green

Bloom

Generous white spathes, twice a year

Notable

The most forgiving cultivar

Care notes specific to 'Mauna Loa'

'Mauna Loa Supreme' is the cultivar most people picture when they hear "peace lily" — a hybrid of S. wallisii and S. floribundum with broad solid-green leaves reaching about 3 feet tall. Bred in the 1960s and now the dominant variety in retail nurseries. It is also the easiest cultivar to grow, which is why this is the only peace lily we recommend to absolute beginners.

• Light: the most forgiving of any cultivar. Tolerates lower light than 'Domino' or 'Picasso', though blooms still need bright indirect.
• Pot size: 8–10 inches at maturity, sometimes 12 if the plant has split into multiple crowns.
• Repotting: every 2 years. 'Mauna Loa' grows faster than the variegated cultivars and root-binds sooner.
• Bloom rate: the most reliable bloomer in the genus. Two to three flushes per year in good light.
• Replacement: almost always available at hardware stores, supermarkets, and big-box garden centers — the cheapest peace lily to find.

Best fit

'Mauna Loa' is the classic peace lily for people who want a reliable green plant with a good chance of blooming indoors. It fits plant stands, corners near bright windows, and medium-size rooms.

Why it is forgiving

The green leaves have plenty of chlorophyll, so this cultivar handles ordinary indoor conditions better than strongly variegated types. It still prefers bright indirect light, but it is less fussy than 'Picasso' or 'Domino' about maintaining leaf color.

Blooming expectations

'Mauna Loa' is a good candidate if flowers matter to you. Give it bright indirect light, steady warmth, and light spring feeding. If it stops blooming after purchase, keep the leaves healthy and give it time to adapt to home conditions.

Buying checklist

• Choose firm glossy leaves with no sour soil smell.
• Do not worry if some older blooms are green or brown.
• Check that the plant is not sitting in standing water.
• Inspect the crown for crowded stems if you plan to divide later.

Pot and placement

A mature plant usually needs a medium pot with drainage and enough weight to stay upright. Place it where the leaves can arch naturally. Rotate it every week or two if it leans toward the window.

Common issues

Yellow leaves usually point to watering or old age. Lack of blooms usually points to light. Brown tips can come from water quality, dry air, fertilizer, or repeated wilting. Use the symptom pages instead of guessing from one leaf.

Watering rhythm

Water when the upper soil begins to dry and the pot feels lighter. 'Mauna Loa' can forgive small mistakes, but it still dislikes standing water. Deep watering with drainage is better than frequent tiny sips.

Repotting notes

Repot when roots crowd the pot or water runs through too quickly. This cultivar often forms a full clump, so division during repotting is possible if each section has roots and a firm crown.

Cleaning and display

Glossy green leaves look best when dust-free. Wipe monthly and remove spent blooms at the base. A clean plant also makes pests and brown tips easier to catch early.

Choose 'Mauna Loa' if

Choose it if you want the classic peace lily experience: green leaves, white spathes, and forgiving care. It is a better first peace lily than a high-variegation cultivar.

How to compare it in a shop

Look for a full crown, firm stems, and leaves that are glossy rather than dusty and limp. Blooms are a bonus, but do not choose a plant only because it has the most flowers. Roots and leaves matter more for long-term success.

Long-term shape

'Mauna Loa' should become a rounded green clump. Rotate it, remove old bloom stalks, and divide only when crowded. A stable routine keeps the classic shape better than frequent moves and repots.

FAQ

Is 'Mauna Loa' good for beginners? Yes, it is one of the better classic choices. Will it bloom indoors? It can in bright indirect light. Is it pet-safe? No peace lily is safe for chewing by cats or dogs.

Best reason to choose it? It balances forgiving foliage with a good bloom potential.

Best place? A warm bright room where its leaves can arch naturally.

Biggest mistake? Chasing blooms before fixing light.

Best habit? Deadhead old blooms and keep leaves clean.

'Mauna Loa' compared to other cultivars

'Mauna Loa' is the default — but the right cultivar depends on your room and patience. Compare:

• 'Sensation' — the giant. Same green simplicity, but a 4–6 ft floor plant. Choose this if you want a statement specimen.
• 'Domino' — the compact tabletop variegated alternative. Smaller, prettier, slightly fussier about light.
• 'Clevelandii' — the historic predecessor with narrower leaves. Visually distinct, slightly less forgiving of low light.
• 'Picasso' — the dramatic panel-variegated cultivar. A collector choice that needs more light and costs more.