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Green beans are one of the easiest, fastest vegetables: direct sow after all frost risk into warm soil (above 16°C), 5-8cm apart for bush types. Bush beans crop in 50-60 days in a concentrated flush; pole beans need a 2m support but yield for months. Pick pods young every 2-3 days. Leaving pods to fatten shuts down production. As legumes they fix their own nitrogen, so go easy on fertilizer. A seed packet costs $2-4 and sows a whole row.
Key facts
- Direct sow only: beans resent transplanting and germinate in days in warm soil; seeds rot in cold, wet ground below ~16°C.
- Bush varieties crop in 50-60 days with no support; pole varieties need a 2m+ trellis but produce 2-3x more over a long season.
- Legumes fix atmospheric nitrogen through root bacteria, so they need little fertilizer and leave soil richer than they found it.
- Picking every 2-3 days keeps plants producing; letting pods mature seed tells the plant to stop flowering.
Care requirements#
| Plant type | Outdoor warm-season annual legume (bush or climbing) |
| Growing medium | Any well-drained garden soil; bush types thrive in 20L+ containers, pole types need a large tub plus trellis |
| Light needs | Full sun, 6-8 hours daily |
| Water frequency | About 2.5cm (1in) per week; critical during flowering and pod set, drought drops flowers |
| Sowing season | Northern hemisphere: direct sow May-Jul after last frost. Southern hemisphere: Oct-Jan. Soil must be 16°C+ or seed rots |
| Spacing | Bush: 5-8cm apart in rows 45cm apart. Pole: 3-4 seeds per pole, poles 60-90cm apart |
| Support | None for bush types; sturdy 2m+ poles, teepee, or netting for pole types, installed at sowing |
| Temperature range | Grows at 18-29°C (65-85°F); frost kills plants outright, flowers drop in extreme heat |
| Fertilizer | Minimal: legumes fix their own nitrogen; excess nitrogen gives leaves instead of pods |
| Soil pH | 6.0-7.0 |
| Container suitability | Excellent: bush beans are among the best container vegetables |
| Toxicity | Cooked pods safe; raw mature beans (especially red kidney) contain lectins and shouldn't be eaten raw in quantity |
Growth & propagation#
| Days to harvest | Bush: 50-60 days from sowing. Pole: 60-70 days, then continuous production |
| Yield per plant | Bush ~0.5-1kg in 2-3 weeks; pole plants 2-3x that over the full season |
| Edible parts | Immature pods; mature seeds edible only after proper cooking |
| Propagation methods | Direct-sown seed only, 2-3cm deep; succession-sow bush types every 2-3 weeks for continuous supply |
| Harvest cue | Pods pencil-thick, smooth, and snap cleanly, before seeds bulge visibly |
| Storage | About a week refrigerated; blanch and freeze, or pickle (dilly beans) for long storage |
Common problems & troubleshooting#
| Symptom | Likely cause | Fix |
|---|---|---|
| Seeds never emerge after sowing | Sown into cold, wet soil. Seed rotted | Wait until soil holds 16°C+, sow into moist (not soaked) ground, and re-sow; beans catch up fast |
| Leaves skeletonized into lace | Mexican bean beetle (Americas) or bean leaf beetles | Hand-pick adults and yellow larvae from leaf undersides; row cover until flowering; strong plants outgrow light damage |
| Flowers drop without forming pods | Heat above ~32°C, drought stress, or excess nitrogen | Water deeply during flowering, mulch, and wait. Pod set resumes when heat breaks |
| Distorted sticky shoot tips, clustered black insects | Black bean aphid (blackfly) | Blast with water, pinch out worst-infested growing tips, use insecticidal soap; ladybirds usually catch up |
| Brown rusty pustules on leaves | Bean rust fungus in humid conditions | Avoid overhead watering and working among wet plants, space for airflow, remove affected leaves, rotate beds yearly |
Never miss the 3-day picking rhythm
Sodate reminds you to pick every few days at peak season. The single habit that keeps bean plants flowering instead of shutting down.
Seasonal care#
Varieties & cultivars#
| Variety | Distinguishing trait | Note |
|---|---|---|
| 'Provider' (bush) | Reliable early cropper, germinates in cooler soil than most | Classic first-bean choice |
| 'Blue Lake' (pole & bush forms) | Straight, stringless, heavy-yielding pods | The canning-industry standard |
| 'Kentucky Wonder' (pole) | Heirloom climber with rich old-fashioned flavor | Needs sturdy 2m+ support |
| Yellow wax & purple types | Coloured pods, easy to spot when picking | Purple pods turn green when cooked |
Buying checklist#
- Buy seed, not seedlings. Beans direct-sow better than they transplant
- Check bush vs pole on the packet before buying: they need completely different setups
- Seed should be plump and uncracked; bean seed stays viable ~3 years
- Stringless modern varieties save kitchen time over old stringy types
- For containers, pick a compact bush variety
Pricing by region#
| Region | Price range | Typical unit | Basis |
|---|---|---|---|
| US | $2 – $5 | Seed packet (25-100 seeds) | Garden centre + seed catalogue retail |
| UK | $2 – $5 | Seed packet | Garden centre retail |
| India | $0.25 – $1 | Seed packet | Agri supply + local nursery |
| Australia | $2 – $5 | Seed packet | Nursery + hardware garden centre |
| Canada | $2 – $5 | Seed packet | Garden centre retail |
USD figures are approximate conversions for comparison; switch the dropdown to see each region's actual local-currency listing price.
Often confused with#
Name confusion warning#
"Green bean", "French bean", "string bean", and "snap bean" are all the same plant (Phaseolus vulgaris). But a UK "runner bean" is a different species with different growing behavior. Check the botanical name when buying seed abroad.
Where it's actually grown#
Bean seed is field-grown at scale in dry-summer regions, Idaho and Washington in the US, plus production areas in France, Tanzania, and China, because dry harvest weather prevents seed-borne diseases. Garden centres sell regionally packed seed; seedlings are rarely sold since direct sowing works better.
Import & biosecurity restrictions#
| Region | Note |
|---|---|
| Australia | Bean seed imports are regulated for seed-borne diseases and need permits; live plants cannot be imported personally. Buy domestic seed. |
| US | Domestic sale unrestricted; small personal seed imports may need a USDA small-lots permit. |
| UK | Home-use seed imports generally fine; commercial lots need phytosanitary certificates. |
| India | No domestic restriction; imported varieties clear standard seed-import channels. |
| Canada | CFIA rules on commercial seed; home-garden packets typically clear without issue. |
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Frequently asked questions
Should I grow bush beans or pole beans?
Bush beans crop faster (50-60 days) with no support but finish in a few weeks; pole beans need a 2m trellis but yield 2-3 times more over the whole season. Small gardens often do best with pole types.
When do I plant green beans?
Direct sow after your last frost once soil reaches at least 16°C. Cold, wet soil rots the seed. In the northern hemisphere that's typically May-July; in the southern hemisphere October-January.
Why are my bean plants flowering but not making pods?
Usually heat above about 32°C or drought during flowering, which makes plants drop blossoms. Water deeply, mulch, and pod set resumes when conditions moderate.
How often should I pick green beans?
Every 2-3 days, while pods are pencil-thick and before seeds bulge. Frequent picking keeps the plant flowering; leaving pods to mature shuts production down.
Do green beans need fertilizer?
Very little. As legumes they fix their own nitrogen. Too much nitrogen fertilizer produces lush leaves and few pods.
