How to Grow Stock

Matthiola incana · Zones Data not available

Stock is an annual grown for its blooms, which open from spring through fall. Notably, it shrugs off deer and grows just as well in a container as in the ground. Its flowers are a moderate draw for honeybees, butterflies, and moths.

Zones

Data not available

pH Range

6-7.5

Sun

Full Sun

Days to Maturity

75

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USDA PLANTS DatabaseUSDA PHZM 2023ASPCA

What Stock is

Stock grows as an annual and reaches around two feet at maturity. It blooms from spring through fall. It's also deer-resistant and well suited to containers.

How to grow Stock

Stock does best in full sun — at least 6 hours of direct sun a day — and soil from pH 6 to 7.5, on well-drained ground. It needs around 600 growing degree days to mature and a growing season of at least 50 frost-free days, which is why climate matters as much as soil.

USDA Zones

Data not available

USDA PHZM 2023

Soil pH

6 - 7.5

USDA PLANTS Database

Sun

Full Sun

plant_species_v5.csv

Drainage

well (dry spells)

plant_species_v5.csv

Days to Maturity

75 days

plant_species_v5.csv

GDD Required

600+

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Mature Height

2 ft

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Frost-Free Days

50+

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  1. Start the season right

    Plant stock in full sun with at least 6 hours of direct sun, once the soil has warmed and frost risk has passed.

  2. Match the soil

    Stock prefers pH 6 to 7.5 (USDA PLANTS Database). A quick soil test from your local Extension lab tells you whether to add lime or sulfur to land in band.

  3. Water steadily

    Keep the root zone evenly moist through establishment. A 2–3 inch mulch layer holds moisture without waterlogging.

  4. Harvest at its peak

    Cut stock blooms in the cool of the morning, just as they open, for the longest display.

Good to know

Good news for pet owners — stock isn't known to be toxic to dogs or cats. (Source: ASPCA.)

Stock offers moderate value to bees and other pollinators. (Source: Xerces Society, Pollinator Partnership.)

Where Stock thrives

Whether stock thrives on a given site comes down to its soil pH, drainage, sun, and frost dates — the conditions that vary parcel to parcel.

Free Report

See if Stock will thrive on your land

Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether stock actually takes — we score it against the real conditions at your address.

Three things about your exact spot that zone averages miss:

Your soil pHYour frost-free daysYour sun & shade

We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.

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Frequently Asked Questions

Can I grow Stock in my zone?

Zone data for stock is being finalized. A Growable Ground report checks your parcel's full suitability against federal soil, climate, and zone data.

When should you plant Stock?

Most growers plant stock after the last spring frost, once the soil has warmed, leaving enough of the season for its 50-day frost-free need. Your local frost dates set the exact window — a Growable Ground report reads them for your address.

How much sun does Stock need?

Stock needs full sun — a spot that catches at least 6 hours of direct summer sun a day. In more shade it still grows, but usually gives a smaller, later crop. The catch is that a yard rarely gets even light everywhere — a fence, the house, or one tall tree can quietly take those hours. A Growable Ground report reads the real sun-hours across your land, canopy and buildings included, so you can pick the brightest bed before you plant.

What soil does Stock need?

Stock prefers soil pH 6 to 7.5, on well-drained ground (USDA PLANTS Database). Your report scores your parcel's actual soil against that using USDA SSURGO data.

Does Stock attract pollinators?

Yes — stock's flowers are a solid nectar source for honeybees, butterflies, and moths (Xerces Society, Pollinator Partnership).

Is Stock safe for pets?

Stock is not known to be toxic to dogs or cats based on available data (ASPCA). Always supervise pets around new plantings.