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193 days to last frost

Guides/Matthiola

Matthiola ‘STOX White’

Matthiola incana

No photograph yet

Days to cut

90–105 days

Status

trying

Catalog ID

CF-53

Seasons logged

2

First sown

2026-04-11

Strong-stemmed white stock bred for durable cut flowers and selectable double blooms.

How it grows

Germination

Days to germ.
7–14 d
Soil temp
60–75 °F
Depth
0.25 in
Light for germ
light

Culture

Days to maturity
90–105 dThis variety
Spacing
4–6 in
Height
24–32 in
Sun
Sun
Frost
hardy
Sow indoors
Yes
Outdoor / direct
No

Harvest

Handling
Harvest when 1/3-1/2 of the flowers on a stem are open.

Trials

Sown
Source
Seeds
Rating
Notes
2026-04-11—25Sown Indoors (25)—Johnny's Selected Seeds—Seed source on file — packet size: Seeds

Other Observations

Notes not filed against a sowing. Everything else sits with its trial above.

No loose observations — every note belongs to a sowing.

This variety’s year

JanFebMarAprMayJunJulAugSepOctNovDec
Sow indoorsMar 26 – Apr 9
Outdoor / directMay 21 – Jun 18
Bloom (from indoor)Jun 25 – Jul 23
Bloom (from outdoor)Aug 20 – Oct 1
See the whole season

Progress

Sown 2026-04-11
Day 213 · past expected maturity (90–105)
This sowing

Seed source

Johnny's Selected Seeds

Other Matthiola varieties

Species overview
No photograph yetMatthiola ‘Katz Lavender Blue’
‘Katz Lavender Blue’
trying
‘Katz Ruby’
Rose Red
No photograph yetMatthiola ‘Vintage Mix’
‘Vintage Mix’
Burgundy · Lilac · White · Peach · Rose · Copper