Plants That Are Fast to Grow: Quick Edibles, Herbs & Greens

If you want something in the ground and growing within days, start with radishes, microgreens, or baby-leaf lettuce. Radishes like 'Cherry Belle' hit edible size in about 25 days from seed. Microgreens are ready to cut in 7 to 21 days. Baby leaf lettuce and arugula give you a bowl of salad in under 30 days, even in a container on a windowsill. Those are the fastest options available to any grower, anywhere, with almost no equipment. Everything else in this guide builds from there, matching faster species to your specific goal: food, herbs, ornamentals, hedging, classroom experiments, or houseplants that actually put on visible growth.

Who this guide is for

This guide is for anyone who wants visible results fast and is tired of vague advice. That includes apartment growers with a south-facing windowsill and a 6-inch pot, suburban gardeners who want to fill a raised bed before summer ends, teachers setting up a classroom tray, and experienced gardeners who want to add quick-turnover crops between slower ones. It covers food crops, herbs, ornamentals, fast hedging plants, and houseplants that root and spread quickly. By the end you will know exactly which plants to grow for your specific situation, what realistic timelines look like, and which growing method gives you the fastest result.

What 'fast to grow' actually means

The phrase gets thrown around loosely, so let's pin it down with four metrics I use consistently across this site. First, days to germinate: the emergence window listed on the seed packet, meaning the number of days before you see the seedling break soil. Second, days to first true leaf: a seedling milestone used by university extensions to mark when cotyledons have opened and the first real leaf has emerged, which is also when you start feeding. Third, days to first harvest, which is the most important number for food growers. Note carefully whether this counts from sowing or from transplant date, because the convention varies. Throughout this article I count from sowing unless I say otherwise. Fourth, growth rate in cm per week or leaf count per week, which is useful for comparing ornamentals and houseplants where harvest is not the goal.

Using those four metrics, here are the practical speed categories I use. Very fast means harvest under 30 days, which covers microgreens, radishes, and baby-leaf mixes. Fast means 30 to 60 days, covering most baby-leaf lettuce at full-leaf stage, fast herbs like basil and cilantro at first cut, and baby bok choy. Moderate means 60 to 90 days, covering bush beans, many brassicas, and most full-head vegetables. Anything beyond 90 days I do not list in this guide as a fast grower, even if it is popular. All timings assume reasonable conditions: adequate light, consistent moisture, and temperatures in the plant's preferred range.

Choosing a fast grower by what you actually want

The single biggest mistake I see is choosing a plant based on what sounds exciting rather than what matches the goal. Here are the decision rules that consistently save time and effort.

Food: you want something to eat quickly

Go to microgreens first if you have any indoor space at all. They are the fastest edible crop on earth at 7 to 21 days, and a shallow tray on a countertop is all you need. For a proper outdoor or container harvest, radishes are your next move: direct-sow, nearly foolproof, and done in 25 to 30 days. Baby-leaf lettuce, arugula, mustard, and Asian greens like mizuna and tatsoi round out the under-30-day list for cut-and-come-again harvests. Sustainable Market Farming reports that mustard, mizuna, tatsoi and similar Asian salad greens reliably produce harvestable baby leaves in about 14–30 days and perform well in low-profile containers and microgreen/baby‑leaf systems, with recommended mixes for classrooms and apartment growers Sustainable Market Farming (baby‑leaf timing and commercial practice). Bush beans and baby bok choy push into the 45-to-60-day range but are worth including for variety.

Herbs and medicine: you want cuttable leaves fast

For herbs, starting from cuttings beats seed almost every time for speed. Basil and mint root in water in as few as 5 to 14 days and can be snipped at first roots. If you are starting from seed, basil germinates in 5 to 10 days and gives you first-cut leaves around 25 to 30 days in warm conditions. Cilantro from seed is slower to establish but gives harvestable leaves in 21 to 28 days in cool weather. Mint spreads fast once established, so keep it in a container unless you want it everywhere.

Ornamentals: you want something that looks good fast

For ornamentals, coleus and zinnias are the reliable fast-display choices. Coleus germinates in 10 to 14 days and roots from cuttings in 7 to 14 days, making it the quickest way to fill a pot with color. Zinnias go from seed to first flower in about 60 days in warm weather. Sunflowers (single-stem dwarf varieties) show noticeable vertical growth within a week of germination and flower in 50 to 70 days. For purely foliage impact, pothos and coleus cuttings give you a full-looking pot in three to four weeks from a single cutting.

Hedging: you need a screen or boundary quickly

Fast-growing hedging is its own category and worth treating carefully. The species that grow fastest are not always the best long-term choice. Leylandii (x Cuprocyparis leylandii) is famous for putting on 60 to 90 cm per year but can become a maintenance burden. Photinia 'Red Robin' grows 30 to 60 cm per year and handles hard pruning well. Bamboo (clumping varieties like Fargesia) puts on dramatic height in one season once established. For a deep dive on which hedging plants actually deliver on the fast-growth promise without becoming a problem, that topic deserves its own treatment.

Classroom and science experiments: you need visible, measurable growth fast

Radishes and mung bean sprouts are the classic classroom picks, and they earn that reputation. Radishes germinate in 3 to 6 days under standard indoor conditions, which is fast enough to see results across a two-week school project. Mung beans sprout in 2 to 4 days with no soil at all, just water and a jar, which makes them ideal for controlled experiments. Mustard seedlings and microgreens are also good because their cotyledon-to-true-leaf transition is visually dramatic and tightly timed. If you want deeper guidance on plants specifically chosen for scientific observation and reproducible results, there are dedicated setups worth exploring. For specific species and reproducible protocols, see our guide to the best plants to grow for science experiments.

Houseplants: you want something that grows noticeably without much fuss

Pothos is the benchmark. It roots from a cutting in 7 to 28 days and puts on new leaves almost weekly in moderate indoor light. Tradescantia (spiderwort) is similarly fast and roots in water almost immediately. Coleus performs well indoors near a bright window and responds to pinching by branching and thickening quickly. For anyone in low light, pothos and heartleaf philodendron are the most forgiving fast growers available.

Quick decision flow: match your situation to a plant

Use this flow to cut straight to the right pick. Start with your space, then your season, then your timeline, then your purpose.

1. Space: Do you have outdoor beds, containers only, or just an indoor ledge? Outdoor beds open up the full list. Containers restrict root volume, so stick to shallow-rooted crops and small herbs (radish, lettuce, basil, coleus). Indoor ledge or countertop means microgreens, sprouts, pothos, or herbs in water.
2. Season: Are you in a warm or cool period right now? Cool season (below 21C / 70F average daytime): lettuce, arugula, mustard, radish, mizuna, tatsoi, cilantro. Warm season (above 21C): basil, zinnias, sunflowers, bush beans, microgreens indoors year-round regardless of outdoor temps.
3. Timeline: Need results in under two weeks? Go sprouts or microgreens only. Under 30 days? Radish, arugula baby leaf, microgreens, fast herb cuttings. Under 60 days? Add lettuce full leaf, basil from seed, coleus for ornamentals.
4. Purpose: Eating it? Prioritize radish, baby leaf, microgreens, herbs. Looking at it? Coleus, zinnias, pothos, sunflowers. Screening the garden? Look at fast hedging options. Science project? Radish, mung bean sprouts, mustard seedlings.

The short-list: fastest plants with realistic timelines

These are the species I come back to repeatedly because they consistently deliver on speed in real growing conditions, not just on paper. I have listed them roughly in order of how quickly you see a usable result.

• Mung bean sprouts: 2 to 4 days in a jar of water, no soil needed. Best for: edible sprouts, classroom demos, apartment kitchens.
• Microgreens (sunflower, pea, radish, broccoli, sunflower, mustard): 7 to 21 days, 14 days as a reliable target. Best for: edible seedlings, indoor trays, very small spaces.
• Radish 'Cherry Belle': germinates in 3 to 6 days, edible root in about 25 days. Best for: containers, raised beds, cool seasons, classrooms.
• Arugula (baby leaf): germinates in 5 to 7 days, first cut in under 30 days. Best for: cool season, containers, windowsill boxes.
• Baby-leaf lettuce mixes: germinates in 5 to 8 days, first cut in 20 to 30 days. Best for: containers, indoor light trays, cool or mild seasons.
• Mustard / mizuna / tatsoi: germinates in 5 to 7 days, baby leaf harvest in 14 to 30 days. Best for: containers, indoor trays, cool weather or indoors year-round.
• Basil (from cutting): roots in water in 5 to 14 days, ready to snip within days of rooting. Best for: warm indoor conditions, kitchen windowsill.
• Basil (from seed): germinates in 5 to 10 days, first leaf harvest around 25 to 30 days. Best for: warm season, containers, indoors with good light.
• Coleus (from cutting): roots in 7 to 14 days, visible new growth in 2 to 3 weeks. Best for: ornamental containers, indoor/outdoor color.
• Pothos (from cutting): roots in 7 to 28 days in water, new leaves within weeks. Best for: low-to-moderate indoor light, hanging baskets.
• Zinnia (from seed, warm season): germinates in 5 to 7 days, first flower in about 60 days. Best for: outdoor warm-season beds and containers.
• Bush beans (e.g., 'Provider'): germinates in 5 to 10 days, first harvest around 50 to 55 days from sowing. Best for: warm season, raised beds and large containers.
• Baby bok choy: germinates in 5 to 7 days, harvest at baby size in 35 to 45 days. Best for: cool season, containers, indoor grow lights.

Species at a glance: growth metrics and conditions

Seeds vs cuttings vs divisions: which is actually faster?

The honest answer is that cuttings beat seeds for most herbs and houseplants, and seeds beat cuttings for vegetables. Here is why. When you take a stem cutting from basil, mint, coleus, or pothos, you are starting with a plant that already has developed tissue and energy reserves. Basil cuttings root in 5 to 14 days in a glass of water and are ready to harvest leaves almost immediately after rooting. Starting basil from seed takes 5 to 10 days just to germinate, then another 2 to 3 weeks before the plant is large enough to cut. That is a meaningful difference when you want herbs in two weeks instead of four.

For cuttings to work fast, you need a few non-negotiable conditions. Take the cutting from actively growing stem tips, not old or woody growth. Remove flowers immediately so the plant directs energy into roots. Keep humidity high around the cutting, either with a clear bag over the pot or a humidity dome. Warm temperatures (21 to 27°C) speed rooting dramatically. University extension guidance consistently recommends this approach for herbaceous species, and in my experience the difference between a warm (24°C) propagation spot and a cool one (16°C) can add 10 days or more to rooting time.

Divisions are the fastest method of all for established clumping plants like mint, chives, or ornamental grasses, because you are splitting a mature root system rather than growing one from scratch. Divide in early spring or early fall when the plant is actively growing, replant immediately in fresh compost-enriched soil, water well, and you will see new growth within days. The trade-off is that you need an existing plant to divide in the first place.

For vegetables and annuals, seeds remain the practical choice because no cutting source exists at the start of a season. The key to seed speed is soil temperature, not air temperature. Radish, lettuce, and arugula germinate best between 10 and 20°C. Basil, beans, and zinnias want 21 to 27°C. Starting seeds in soil that is too cold, even indoors, is the single most common reason germination drags on for two to three weeks when it should take five to seven days.

Getting the most speed from containers, vertical setups, and indoor systems

Pot size matters more than most people think

Research on rooting volume consistently shows that doubling a pot's volume increases plant biomass by roughly 43% on average, and that root restriction shows up in growth rates within as little as 18 days of planting. In practice this means a radish in a 3-inch pot is going to underperform the same radish in a 6 to 8-inch pot, even if both look fine at first. For microgreens and sprouts, rooting volume barely matters because you harvest before roots are the limiting factor, so shallow flats (2 to 3 cm deep) work perfectly. For single herb plants, use 6 to 8-inch pots. For large annuals like zinnias or bush beans, step up to 3 to 5 gallons. Using a container that is too small is probably the most common mistake I see in container gardening.

Soil mix, drainage, and fertilization

For fast production in containers, use a low-salt, well-drained seedling or potting mix with a pH of roughly 5.7 to 6.2. Straight garden soil compacts in containers and suffocates roots. A mix of quality potting compost with 20 to 30% perlite gives good drainage and aeration. Start light feeding at the first true-leaf stage: a quarter to half-strength water-soluble balanced fertilizer applied once a week is enough for the first few weeks. Going heavy on fertilizer early causes more problems than it solves, including leaf burn and damping-off in seedlings. Consistent moisture without waterlogging is the target. Bottom watering (setting trays in water for 20 to 30 minutes) works well for microgreens and seedlings to keep the surface dry and reduce damping-off risk.

Indoor light and vertical space

Indoors, light is almost always the limiting factor, not water or nutrients. A south-facing windowsill in summer gives reasonable light for lettuce, arugula, and herbs. In winter or in apartments with north-facing windows, a basic LED grow light set to 14 to 16 hours per day makes a significant difference. You do not need an expensive setup: a single broad-spectrum LED panel 15 to 30 cm above the tray is enough for microgreens and herbs. Vertical space can be used with shelf risers or tiered plant stands, stacking trays of microgreens or small herb pots. This is genuinely practical in a studio apartment and can yield several harvests per week from a space no larger than a kitchen cart.

Hydroponics and microgreen systems for the fastest indoor results

Hydroponics consistently outpaces soil in speed for leaf crops. Hydroponic leaf lettuce under optimized LED lighting and controlled temperatures typically reaches harvest in 28 to 35 days, compared to 45 to 60 days for soil-grown head lettuce. The reason is direct access to dissolved nutrients and consistent root moisture, removing two of the main speed limiters in soil. For apartment growers who want the fastest possible food production, a simple deep-water culture (DWC) setup or a commercially available countertop hydroponic unit is worth considering. The setup cost is higher than a bag of soil and some trays, but the speed improvement is real and repeatable.

For microgreens specifically, the setup is even simpler. You need a shallow tray (2 to 3 cm deep), a growing medium (potting mix, coconut coir, or specialized microgreen pads), a seed source intended for sprouting or microgreens (food-safety note: use clean, untreated seed from a reputable supplier), and either bright natural light or a basic LED. Growing Microgreens and Baby Greens Indoors, University of Maryland Extension provides university-backed guidance on microgreen harvest timing, sterile seed sources, shallow trays, watering methods, and food-safety practices Growing Microgreens and Baby Greens Indoors — University of Maryland Extension. Sow densely, mist gently or bottom-water, and harvest with scissors at the cotyledon stage or when the first true leaf appears. Fourteen days is the standard target from sowing to cutting, with some varieties (radish, mustard) ready even sooner.

Planting calendar and succession guide by season

Timing your plantings so you always have something at the harvest stage is called succession planting, and it is the single best technique for making fast-growing plants feel even faster. The idea is simple: instead of sowing one large batch and waiting, you sow a small batch every 7 to 14 days. By week three of your first sowing, you are harvesting the first tray while the second tray is a week behind and the third is just germinating.

Troubleshooting the most common fast-grower problems

Germination is slow or patchy

Nine times out of ten, slow germination in containers or indoors is a soil temperature problem, not a watering or light problem. Seeds need specific soil temperatures, not air temperatures, to sprout quickly. Get a cheap soil thermometer. Radish, lettuce, and arugula want 10 to 20°C soil. Basil and beans want at least 21°C. If your kitchen counter is 18°C in winter, basil will take three weeks to germinate. A heat mat set to 21 to 24°C fixes this immediately. Old seed is the other common culprit: test germination by placing 10 seeds on a damp paper towel in a warm spot for a week before sowing a full tray.

Seedlings are leggy and pale

Legginess in seedlings is almost always a light problem. The seedling is stretching toward any light source it can find. Move it closer to the window or drop the grow light to within 15 to 20 cm of the seedling tops. Leggy seedlings can be saved by potting them up deeper so the stem is partially buried (this works well for tomatoes and basil), but prevention is easier than cure.

Damping-off (seedlings collapsing at the soil line)

Damping-off is a fungal issue caused by overly wet, poorly aerated soil combined with low airflow. The seedling looks fine one day and falls over the next. Prevention: use a sterile seed-starting mix, never reuse old trays without washing them, water from the bottom when possible, keep a small fan running on low to improve air circulation, and avoid overwatering in the critical first two weeks. There is no reliable cure once it starts, so prevention is the only practical approach.

Plants growing slowly despite good conditions

If light, temperature, and water seem fine, check the pot size and nutrients. A rootbound plant in a small container shows slowed growth even in good conditions. Check by sliding the rootball out: if roots are circling the bottom or the entire root mass is solid with little soil visible, it is time to pot up. Also check soil pH if you have a test kit: a pH outside 5.7 to 6.5 locks out nutrients even when fertilizer is applied, causing yellowing leaves and stunted growth that looks like a deficiency but is actually a chemistry problem.

Common pests on fast-growing greens and herbs

• Aphids on lettuce and arugula: look for clusters under leaves; remove with a strong water spray or neem oil solution. Outdoors, beneficial insects usually take care of aphid problems within a week or two if you avoid pesticides.
• Fungus gnats in indoor containers: caused by consistently wet surface soil. Let the top 2 cm of soil dry between waterings and use yellow sticky traps near the pots to break the population cycle.
• Slugs on outdoor greens (cool, damp conditions): most damaging overnight. Copper tape around containers creates a barrier, and iron phosphate pellets are safe around edibles.
• Whitefly on basil indoors: introduce good airflow and use yellow sticky traps. Neem oil spray works on contact but needs repeat applications every 5 to 7 days.
• Bolting in lettuce and arugula: not a pest but a common problem. Heat and long days trigger bolting, turning leaves bitter and stopping leaf production. Grow these in cool conditions, provide afternoon shade in warm climates, and harvest frequently to delay bolting.

A note on fast-growing plants beyond food and herbs

If your goal is visual impact, scientific observation, or landscape screening rather than eating, the same principles of matching species to conditions apply but the metric shifts from days to harvest to something like days to noticeable growth or rate of spread. Coleus grown from cuttings gives you a lush ornamental pot in three to four weeks and is genuinely one of the most rewarding plants to propagate quickly. If you want to grow something that invites a second look or starts an interesting conversation, there is a whole separate category of unusual and visually striking fast-growing plants worth exploring. For examples, see our list of the coolest plants you can grow for striking, fast-performing specimens. For hedging and boundary situations, choosing the right species matters enormously because fast-growing hedges vary widely in how much they take over, how much pruning they need, and whether they stay attractive year-round. If you're curious about value as well as speed, see our guide to the most expensive plants you can grow for ideas on high‑value, fast‑turnaround species.

Practical tips to push growth speed in any setup

• Match soil temperature to species minimums before sowing. A heat mat is the single highest-impact tool for indoor germination speed.
• Use the right pot size from the start. Radishes need at least 6 inches of depth. Microgreens need only 2 to 3 cm. Herbs need 6 to 8-inch pots. Zinnias and beans need 3 to 5 gallons.
• Bottom-water seedlings and microgreens to keep the soil surface dry, which dramatically reduces damping-off.
• Feed at first true leaf with quarter to half-strength balanced liquid fertilizer. Earlier feeding does more harm than good. Consistent light feeding weekly outperforms occasional heavy doses.
• Run a small fan near indoor seedlings for 30 to 60 minutes a day. Airflow reduces damping-off and strengthens stems.
• Succession sow every 10 to 14 days for any cut-and-come-again crop. This is how you go from one harvest every 3 weeks to harvesting every few days.
• Take herb cuttings in late spring and summer when growth is most vigorous. Cuttings taken from actively growing tips root in half the time of cuttings from tired or dormant growth.
• For outdoor containers, move pots to the warmest microclimate available (south-facing walls, paved areas that retain heat) to add one to two weeks of effective warm-season growing.