Growli
Let's go

Watering schedule

How often to water Haricot Vert (Phaseolus vulgaris 'French Filet') — the schedule

Also called Haricot Vert, French Filet Bean, French Green Bean, Filet Bean.

More about haricot vert

About Haricot Vert

Phaseolus vulgaris 'French Filet' · also called Haricot Vert, French Filet Bean · edible

The classic French fine bean: slender, stringless, pencil-thin pods harvested at 10–13 cm for peak tenderness and flavour. Bush varieties mature early in 50–60 days, making succession sowing every 2–3 weeks highly productive. Prized for gourmet texture and versatility. Requires consistent harvesting every 2 days once pods begin forming to maintain quality.

Ideal humidity: 45–70%

The watering schedule, season by season

Haricot Vert crops best on deep, regular soaks rather than light daily sprinkles — steady moisture at the roots is what fills and sizes the harvest. The base rhythm for haricot vert is every 2–3 days; daily in heat above 30 °c, but the real interval moves with the season, the light and the pot — so treat the figures below as a starting point and always confirm with the plant itself.

Consistent, even moisture is critical. Uneven watering causes irregular germination, cracked pods, and fibrous texture. Water at the base; wet foliage encourages bean rust. Apply a 5 cm organic mulch to conserve moisture and regulate soil temperature.

Want this turned into a live reminder that adjusts to your home and the weather? The Growli watering calculator takes your pot size, light and season and returns a starting interval for haricot vert in seconds.

How to tell haricot vert needs water

A calendar is the worst way to water haricot vert. Check the plant and the soil instead — for this species, look for these signals in order:

The most reliable single check is the first one on that list. When two signals agree, water; when they disagree, wait a day and look again — under-watering haricot vert for a day is almost always safer than over-watering it.

Overwatering vs underwatering haricot vert

The two failure modes can look alike at a glance, so check the soil weight and wetness before you decide. For haricot vert specifically:

Signs you are overwatering

Signs you are underwatering

Shallow, frequent watering grows shallow roots and leaves haricot vert prone to drought stress — cracked or woody roots, bitterness and premature bolting. Water deep and at the base, not little-and-often over the leaves.

Water quality notes

Tap water is fine for haricot vert; consistency and depth matter far more than water type. Water early in the day at soil level to limit fungal disease.

Seasonal and environmental adjusters

Every figure above shifts with the conditions in your home. For haricot vert, the levers that matter most are:

Pot choice is part of this too — work out the right size with the pot size calculator, since a pot that is too big stays wet long enough to rot the roots of haricot vert.

Haricot Vert watering — frequently asked questions

How often should I water haricot vert?

Water haricot vert every 2–3 days; daily in heat above 30 °c. Main season: aim for the equivalent of 2-3 cm of water per week as one or two deep soaks at the base, more in heat or during fruiting/sizing. Off-season: most do not overwinter outdoors — store, mulch, or grow undercover; container plants need only occasional water if dormant.

How do I know when haricot vert needs water?

Push a finger 3-4 cm into the soil — if it comes back dust-dry, water now. Leaves wilt in the midday heat and do not fully recover by evening. The soil surface is cracked or pulling away from the bed/pot edge. The single most reliable test for haricot vert is the first signal on that list — checking the soil or the plant directly always beats watering by the calendar.

What does an overwatered haricot vert look like?

Yellowing lower leaves and waterlogged, airless soil. Root rot and wilting despite wet soil; fungal leaf spots from constantly wet foliage. Split or cracked fruit/roots from a sudden glut after drought. Shallow, frequent watering grows shallow roots and leaves haricot vert prone to drought stress — cracked or woody roots, bitterness and premature bolting. Water deep and at the base, not little-and-often over the leaves.

What are the signs of an underwatered haricot vert?

Persistent wilting, small or bitter produce, premature bolting. Blossom-end rot on tomatoes/peppers/squash from erratic moisture. Tough, woody or cracked roots in root crops.

Can I use tap water on haricot vert?

Tap water is fine for haricot vert; consistency and depth matter far more than water type. Water early in the day at soil level to limit fungal disease.

Keep reading