Big-leaved perennials bring bold texture and a tropical look to gardens, while returning year after year. Their broad foliage can soften fences, fill shady spaces, or create a focal point, but the right plant depends on your climate, soil, light, and available space. Before planting, check the plant’s mature size and hardiness for your area; large leaves alone do not mean a perennial will survive your winters.
What You’ll Need
- A planting site with light and space suited to the chosen perennial
- A healthy, locally appropriate plant or division
- A spade or hand trowel and, if needed, a garden fork
- Compost or other soil amendment if a soil test or site conditions indicate it is needed
- Watering can or hose, plus organic mulch
- Gloves; use them when handling plants that may irritate skin or have sharp edges
Step-by-Step
- Choose a plant for your conditions. Match the perennial to your climate zone and the site’s sun, moisture, and soil. Hostas and rodgersias often suit shade or partial shade, while gunnera needs ample moisture and room. Some large-leaved plants, such as certain bananas or elephant ears, are grown as perennials only in warm climates; in colder areas they may need winter protection or to be lifted and stored. Confirm the species’ mature height and spread before buying.
- Assess the planting site. Observe how many hours of direct sun it receives and whether the ground dries quickly, stays damp, or becomes waterlogged. Broad leaves lose water readily, so many plants appreciate consistent moisture and shelter from drying winds. However, persistently soggy soil can rot roots unless the plant is adapted to boggy conditions. Avoid planting under trees with dense surface roots unless the perennial can compete successfully.
- Prepare the soil. Remove weeds and loosen the soil across an area wider than the root ball. Check drainage: after watering or rain, water should not remain pooled for long unless you are planting a moisture-loving species in a suitable wet spot. Mix in a modest amount of mature compost if the soil is poor or low in organic matter. Do not add fertilizer or large quantities of amendments by default; follow a soil test and the plant’s needs.
- Plant at the correct depth. Water the plant in its container before planting. Dig a hole about as deep as the root ball and roughly twice as wide. Slide the plant out gently, tease apart tightly circling roots, and set it so the crown—the point where stems meet roots—rests at soil level. Backfill with the excavated soil, firm lightly, then water thoroughly to settle it. Plant divisions at the same depth they were growing before.
- Space for mature growth. Use the plant label or a reliable local reference to determine its mature spread, and leave that much room between plants and nearby paths or walls. Small plants can look lost at first, but crowding them to fill a space quickly reduces airflow and creates competition. Allow access for watering, weeding, and removing damaged foliage.
- Mulch and water consistently. Apply a 2–3 inch (5–8 cm) layer of organic mulch over the root zone, keeping it a few inches away from stems and crowns. Water deeply after planting, then keep the root zone evenly moist while the plant establishes. Check the soil rather than watering on a rigid schedule: water when the upper few inches feel dry, unless the species requires consistently wet soil. Adjust for rainfall, heat, and drainage.
- Maintain healthy foliage. Remove leaves that are dead, badly damaged, or diseased using clean pruners. Wipe or disinfect tools between plants when disease is suspected. Look beneath leaves for slugs, snails, and other pests, and use controls appropriate to the plant and local guidance. Avoid cutting back healthy foliage too early; leaves help replenish the roots.
- Prepare for winter and future growth. Follow species-specific advice for frost protection. In cold climates, some tender perennials must be lifted before frost and stored frost-free; others can be mulched or grown in containers that are moved under cover. Do not assume a thick mulch makes a tender plant hardy. Divide established clumps only when they become crowded or less vigorous, and do so in the season recommended for that species.
Common Mistakes
- Choosing by appearance alone: A plant sold as a perennial may not be winter-hardy in your location. Check its botanical name and local hardiness guidance.
- Putting a shade plant in harsh sun: Scorching, pale patches, or crisp edges can follow. Match light requirements, and remember that reflected heat near walls can intensify sun exposure.
- Overwatering every large-leaved plant: Broad foliage does not mean the roots want boggy soil. Match watering to the species and drainage.
- Planting too deeply or burying the crown: This can encourage rot and weak growth. Keep the crown at soil level unless reliable plant-specific instructions say otherwise.
- Overfertilizing: Excess fertilizer can produce soft growth, damage roots, or increase pest problems. Feed only when needed and according to label directions.
- Ignoring mature size: Large foliage can quickly engulf a narrow path or overwhelm neighboring plants. Plan for the full spread, not the nursery-pot size.
Tips
- Combine bold leaves with fine-textured plants, grasses, or smaller foliage to make the planting feel balanced.
- Use a sheltered location for leaves that tear easily in strong winds.
- Take photos of the site at different times of day to judge sun and shade accurately before buying.
- Water at soil level when practical. This helps keep foliage drier and makes it easier to spot leaves that need attention.
- Keep plant labels or record botanical names; common names can refer to several different species with different care needs.
Troubleshooting
Leaves have brown, crispy edges: Check soil moisture, recent heat, wind exposure, and sun intensity. Water deeply if the root zone is dry, add mulch if needed, and provide afternoon shade or wind protection when appropriate. Do not keep watering if the soil is already wet.
Leaves are yellowing and the soil stays wet: Poor drainage or excessive watering may be causing root stress. Pause watering, check whether water is pooling, and improve drainage or move the plant if its needs do not match the site. Remove only leaves that are fully dead.
The plant is small or slow to establish: Check planting depth, light, moisture, and competition from weeds or tree roots. Give a newly planted perennial time to establish; avoid forcing growth with extra fertilizer.
Leaves have holes or ragged edges: Inspect at dusk or early morning for slugs and snails, and look for other pests under the leaves. Remove pests by hand or use a control labeled for the plant and pest, following directions and protecting beneficial wildlife.
The plant collapses after frost: The foliage may have been damaged even if roots survive. Wait until the plant’s winter-care instructions indicate it is time to cut back; protect or store tender species before the next frost season.
Frequently Asked Questions
Which perennials have especially large leaves?
Examples include hostas, rodgersias, darmera, gunnera, and some hardy bananas. Their size, moisture needs, and cold tolerance differ, so check the exact species and cultivar.
Do big-leaved perennials need full sun?
No. Many prefer shade or partial shade, while others tolerate or need more sun if they receive enough water. Follow the plant’s light requirements and account for local heat.
How often should I water them?
There is no universal schedule. Check the soil near the roots and water when it is drying to the point appropriate for that species. Newly planted plants generally need closer monitoring than established ones.
Can I grow tropical-looking perennials in a cold climate?
Yes, if you choose hardy varieties or are prepared to lift and store tender plants, grow them in movable containers, or provide suitable winter protection. Verify local hardiness rather than relying on appearance.
When should I divide a big-leaved perennial?
Divide when a clump is overcrowded, its center weakens, or you want more plants. The best season varies by species; follow plant-specific guidance and replant divisions promptly.
Why are my large leaves tearing?
Strong winds, hail, handling, and some pests can split foliage. Choose a sheltered site, avoid unnecessary handling, and remove badly damaged leaves if they are unsightly or diseased; minor tears usually do not harm the plant.