Best Low Maintenance Plants for Window Boxes, Herbs and Raised Beds

The best low maintenance plants for window boxes are tough, sun-loving trailers and fillers such as calibrachoa, lantana, sedum and bacopa, with begonias, hostas and heuchera for shade; the best herbs for raised beds are basil, parsley, chives, thyme and oregano. The plants only stay easy if the setup is right, so this guide pairs plant choices with seven practical supplies: a self-watering window box, coco liners, potting mix, an herb seed kit, raised bed soil, slow-release plant food and metal edging. The Mayne Fairfield self-watering window box is our top pick for the planter, and Espoma Organic Raised Bed Mix is the soil we would start with for beds.

People searching for “best low maintenance plants for window boxes” also ask about hanging flowers, ivy, lavender, lettuce, herbs and raised bed soil. This guide groups those questions in one place: plants for window boxes (sun, shade and winter), herbs and greens for raised beds, soil, and edging for flower beds. This guide is research-based: we did not personally grow these products or plants, and plant performance varies by climate zone, so check your local extension office for what thrives in your area. The store sells supplies rather than live plants, so the products below are the containers, soil and tools that make the plants succeed.

Our top picks

Top pickMiracle-Gro Potting Mix

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Also greatMiracle-Gro Indoor Potting Mix for All Plants

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Also greatMiracle-Gro Organic Outdoor Potting Mix

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Also greatMiracle-Gro Houseplant Potting Mix

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Top Picks at a Glance

• Best Overall Planter: Mayne Fairfield 48in Self-Watering Window Box (Premium)
• Best Liner Upgrade: Halatool 36 inch Coconut Liners for window boxes (Budget)
• Best Potting Mix for Containers: Miracle-Gro Organic Outdoor Potting Mix (Budget)
• Best Herb Starter: Seed Needs Herb Seeds Variety Pack of 12 (Budget)
• Best Raised Bed Soil: Espoma Organic Raised Bed Mix (Mid-range)
• Best Slow-Release Feed: Osmocote Smart-Release Plant Food Plus (Budget)
• Best Metal Bed Edging: VEVOR Galvanized Steel Landscape Edging (Mid-range)

Plant Quick Guide

1. Mayne Fairfield 48in Self-Watering Window Box: Best Overall Planter

• 48 inch rectangular self-watering window box (per listing)
• Fade-resistant, all-season material described in the listing
• Self-watering reservoir to reduce daily watering
• Black finish in the listing
• Price tier: Premium

Best for: sunny railings and sills where plants dry out fast. Skip if: you want a cheap multipack for several windows.

The most common reason window boxes fail is that they dry out in summer, because a shallow box holds little water. A self-watering design stores water in a reservoir and wicks it up, which smooths out the swings between soaked and dry. That makes it a better home for low maintenance plants such as calibrachoa and bacopa that dislike drying out completely. Even so, self-watering does not mean neglect: check the reservoir in hot weather and make sure the mounting brackets are rated for a full, wet box, which is heavy.

Check that the box length fits your window or rail and that you can mount it securely. Do not hang a heavy box from a weak rail. If you rent, ask permission before drilling.

Pros: reservoir cuts watering, durable-looking material, long size looks balanced. Cons: costs more than basic boxes, brackets may be separate, heavy when full.

2. Halatool Coconut Liners: Best Liner Upgrade

• 4 pack of 36 inch coco liners per the title
• Natural coconut fiber, marketed as 100 percent natural
• Designed for window box and trough planters
• Helps drainage and moisture retention according to the listing
• Price tier: Budget

Best for: wire or metal troughs that need a lining. Skip if: your box is a solid plastic planter with its own drainage.

A coco liner holds soil in a wire frame while letting water pass. In a metal box, a liner also buffers soil from heat. The fiber holds moisture, so plants dry out more slowly than in bare wire. Liners are consumables; they wear out over several seasons and should be replaced when they thin or sag. Pre-soak the liner before planting so it does not shrink when it gets wet, and trim it to fit rather than overfilling.

Pros: natural look, good drainage, easy to replace. Cons: wear out, can dry fast in wind, size must match the box.

3. Miracle-Gro Organic Outdoor Potting Mix: Best Potting Mix for Window Boxes

• 16 quart bag, organic outdoor potting mix
• Formulated for container plants according to the listing
• Contains quick-release natural fertilizer per the listing
• Not for in-ground beds
• Price tier: Budget

Best for: window boxes, pots and hanging baskets. Skip if: you are filling a large raised bed; a bulk raised bed mix is cheaper per cubic foot.

Container plants need a light, free-draining mix; garden soil compacts in a box and drowns roots. A potting mix is the foundation of a low maintenance box. Fill the box to about an inch below the rim, water thoroughly, and let it settle before planting. Over time potting mix breaks down and shrinks, so top up each spring. A quick-release feed gives plants an early start but runs out, so plan to add a slow-release feed for the rest of the season.

Pros: light, easy to use, suited to containers. Cons: small bag for big boxes, feed runs out, quality varies by bag.

4. Seed Needs Herb Seeds Variety Pack of 12: Best Herb Starter

• 12 culinary herbs in one pack, including basil, chives, dill, cilantro, oregano and marjoram (per the listing)
• Non-GMO, heirloom seeds
• Suited to pots, window boxes and raised beds
• Sowing depth and spacing are printed on the packets (check the pack)
• Price tier: Budget

Best for: first-time herb growers who want variety. Skip if: you only want one or two herbs; buy individual packets.

Herbs are among the easiest edibles to grow. For “best herbs for raised beds” and “best herbs for raised garden beds”, pick sun-loving culinary herbs and group them by water needs. Basil, parsley, chives and cilantro like regular moisture. Thyme, oregano and rosemary prefer drier, well-drained soil. Mint is vigorous and spreads by runners, so grow it in a pot sunk into the bed rather than loose in the soil. Sow after your last frost date for tender herbs such as basil, and thin seedlings so they have room to grow.

Harvest often: pinching basil tips and cutting chives encourages new growth. Annual herbs like cilantro and dill bolt in heat, so sow in small batches every few weeks. Seeds need warmth and light to germinate; keep the soil surface moist until sprouts appear.

Pros: good variety, cheap, helpful for testing what you like. Cons: germination varies, more seeds than a small bed needs, some herbs prefer different conditions.

5. Espoma Organic Raised Bed Mix: Best Raised Bed Soil

• Organic raised bed mix for vegetables and herbs, per the listing
• Sold in bags; check the cubic foot size on the product page
• Designed for raised gardens rather than in-ground soil
• Natural ingredients per the maker
• Price tier: Mid-range

Best for: filling new raised beds for herbs, lettuce and vegetables. Skip if: you need to fill a very large bed on a budget; consider bulk delivery from a local supplier.

“Best kind of soil for raised beds” has a practical answer: a loose mix of compost and a light material such as peat or coir, with enough organic matter to hold moisture and enough structure to drain. A bagged raised bed mix removes the guesswork. Calculate your bed volume first: length times width times depth in feet gives cubic feet, so a 4 by 4 foot bed filled 10 inches deep needs roughly 13 cubic feet. Pick a bag size accordingly and buy a little extra, because soil settles.

For lettuce and other greens, a loose, moisture-holding mix is ideal. Keep the soil evenly moist and plant in cool weather. For herbs like thyme and rosemary, mix in extra grit or sand for sharper drainage.

Pros: ready to use, fits herbs and veggies, organic ingredients. Cons: expensive for large beds, quality varies by lot, needs top-ups.

6. Osmocote Smart-Release Plant Food Plus: Best Slow-Release Feed

• Granular continuous-release plant food (listing)
• For outdoor and indoor plants in containers and in the ground
• Offered in 1, 2 and 8 pound sizes
• Single application per feeding period, follow the label for timing
• Price tier: Budget

Best for: window boxes with heavy bloomers such as petunias and calibrachoa. Skip if: you garden organically and prefer compost-based feeds.

Frequent watering washes nutrients out of window boxes, so plants that look tired by midsummer often need food. A slow-release product reduces the work because it feeds gradually over weeks. Follow the label rate carefully; more is not better, and over-fertilizing can burn roots. Wear gloves, keep granules away from children and pets, and store the bag closed.

Pros: low effort, steady feeding, several sizes. Cons: not organic, label rates must be followed, effectiveness depends on watering.

7. VEVOR Galvanized Steel Landscape Edging: Best Metal Edging for Flower Beds

• 6 pack of 40 by 6 inch panels, per the listing
• Galvanized steel, bendable according to the title
• Includes mounting clips per the listing
• Used around beds, walkways and lawn borders
• Price tier: Mid-range

Best for: clean borders around flower beds and herb beds. Skip if: you need a very flexible curve; thin corrugated edging bends more easily.

Metal edging is the answer to “best metal lawn edging” and “best landscape edging for flower beds”. It forms a crisp line between lawn and bed and keeps grass from creeping into plantings. Choose height by purpose: shallow edging marks a border, taller panels hold mulch and resist grass runners. We do not claim a lifespan or install time for any model; both depend on soil, climate and your skill. Wear gloves because cut edges can be sharp, and call before digging to check for buried utilities.

Pros: clean look, thin profile, durable material. Cons: sharp edges, can be hard to install in rocky soil, straight panels bend only so far.

Also Consider

• Land Guard Galvanized Raised Garden Bed Kit: a metal bed for herbs and greens when you want to start with a ready-made box.
• VIVOSUN Self-Watering Planters (6-Pack 10.5 inch): small window herb planters that suit a kitchen sill or small balcony.
• Sereniseed Certified Organic Herb Seeds 10-Pack: an organic seed option if you prefer certified seed.
• LAVEVE Corrugated Metal Garden Edging: a thinner, more flexible edging for curved beds.

Plant Picks by Situation

Best low plants for winter window boxes

For cold months, choose plants rated for your hardiness zone. Pansies and violas bloom in cool weather, ornamental kale and cabbage hold color, and evergreen sprigs and small shrubs such as dwarf conifers add structure. Heather and heuchera can last through mild winters. Water less in winter because cold slows evaporation, but do not let the soil dry out completely. Check the plant tag for the zone rating, and move boxes against a wall in severe cold.

Best hanging flowers and hanging plants for window boxes

Trailing plants soften the edge of a box. Calibrachoa (million bells), bacopa, trailing lobelia, sweet potato vine and golden creeping Jenny all spill nicely. Dragon wing begonias have an arching habit and bloom without deadheading, according to gardening publications. Combine a “thriller” (a tall center plant), “fillers” (mounded plants) and “spillers” (trailing plants) for a balanced box.

Best ivy for window boxes

Ivy is a classic trailing foliage plant that looks good all year. English ivy is invasive in parts of North America and should not be planted where it can spread; check local guidance and consider non-invasive alternatives such as variegated creeping Jenny, ivy geranium or sweet potato vine. If you do use ivy, keep it clipped and in a container.

Best lavender for window boxes

Lavender wants full sun and sharp drainage. Compact varieties suit boxes better than tall ones. Use a gritty mix, avoid overwatering, and do not crowd the plant. Lavender hates wet roots, which is why a self-watering reservoir is a poor match unless you adjust the wicking; use a standard drainage box for lavender and herbs like thyme.

Best lettuce for raised beds

Loose-leaf lettuce is simple because you can harvest outer leaves and the plant keeps growing. Sow in cool weather, keep the soil moist, and offer afternoon shade in warm climates to delay bolting. Pick varieties suited to your season, and read the seed packet for spacing.

How We Chose

We began with the search questions behind this topic and checked gardening publications, extension-style guidance and seed company pages for plant suitability, then matched each need to products in the store. We did not personally grow these plants or use these products, and we did not use any figure that we could not find on a listing or maker page. Where size, volume or ingredient details were not clear, we say “check the product page”.

Because the store does not sell live plants, we selected supplies that make low maintenance plants easier: the planter, liner, soil, feed, seeds and edging. We limited the picks to one per category and avoided duplicate brands.

Buying Guide

Choose the right window box size

Deeper boxes hold more water and stay cooler. A depth of about 8 inches or more gives plants room and reduces drying. Match the length to the window and allow space for brackets. Check weight limits, because a wet box is heavy.

Pick plants by light first

Observe how many hours of direct sun the spot gets. Six or more hours is full sun, about four to six is part sun, and less is shade. A plant labeled for sun will sulk in shade and vice versa, and fixing the wrong plant is harder than choosing the right one.

Mix your own combination

Use one tall plant, a few mounded fillers and a trailer. Choose plants with similar water needs; do not pair thirsty impatiens with drought-lover sedum. Space plants closely but not touching so the box looks full without crowding roots.

Plan water and feeding

In summer, a small box may need daily watering. Self-watering boxes, coco liners that hold moisture and a layer of mulch reduce the load. Feed with a slow-release product at the label rate and top with liquid feed if plants stall.

Set up a raised bed for herbs and greens

Put beds where they get at least six hours of sun. Use a loose mix, plant herbs by water need, and edge the bed with metal or other edging to hold mulch and keep grass out. Add a thin layer of mulch to reduce weeds and evaporation.

Common Mistakes to Avoid

• Using garden soil in boxes, which compacts and drains poorly.
• Mixing sun and shade plants in one box.
• Overfeeding, which burns roots and limits flowers.
• Planting mint loose in a bed instead of containing it.
• Ignoring local invasive plant guidance, especially for ivy.

Frequently Asked Questions

What are the best low maintenance plants for window boxes?

For sun, choose calibrachoa, lantana, petunia, portulaca and sedum. For shade, choose begonias, impatiens, hostas and heuchera. Match the plant to the light and your climate zone.

What are the best herbs for raised beds?

Basil, parsley, chives, thyme and oregano are reliable. Keep mint in a pot, and give rosemary and thyme sharp drainage.

What is the best soil for raised beds?

A loose, compost-rich raised bed mix works best, such as Espoma Organic Raised Bed Mix. Calculate cubic feet before you buy, and top up as the soil settles.

Which hanging plants look best in a window box?

Calibrachoa, bacopa, trailing lobelia, sweet potato vine and golden creeping Jenny are popular spillers. Choose by sun exposure.

Can I grow lavender in a window box?

Yes, if the spot gets full sun and the mix drains quickly. Avoid soggy soil and choose a compact variety.

Is ivy a good choice for window boxes?

It looks good, but English ivy can be invasive in some regions. Check local guidance and consider alternatives.

Does metal edging last a long time?

Lifespan varies with the product, soil and climate, so we make no claim. Read the maker’s description, wear gloves during installation and check for buried utilities before digging.

Which One Should You Buy?

Start with the planter: buy the Mayne Fairfield self-watering box for sunny sills or use coco liners in a trough. Fill it with Miracle-Gro Organic Outdoor Potting Mix and add Osmocote for steady feeding. For herbs and greens, buy the Seed Needs herb pack, fill your bed with Espoma Organic Raised Bed Mix, and finish the border with VEVOR galvanized edging. Then choose plants that match the light, and check your local extension service for varieties that thrive in your area.

Sources

• Manufacturer pages for Mayne, Halatool, Miracle-Gro, Seed Needs, Espoma, Osmocote and VEVOR
• Today’s Homeowner window box plant guides
• Park Seed window box flower guidance
• Local cooperative extension service planting guides

Last updated: October 2026