Cancan
ActiveLactuca sativa L. · Lettuce
Hazera Seeds B.V.
NL
4 records
Cultivation
Lettuce Plant Density
Lactuca sativa L.
A key technological parameter in lettuce cultivation that determines the formation of marketable mass and head size, as well as the risk level for fungal infections.
In the reference 10 varieties crop Lettuce, where this is mentioned in the description.
Optimal plant density depends on the cultivar habit: for small-headed types, 20×20 cm spacing is recommended; for medium ones, 25×25 cm; and for large types, such as 'Batavia', 30×30 cm or 30×25 cm. For head lettuce varieties, planting density should not exceed 11 plants per 1 m² to avoid poor ventilation and the development of downy mildew.
In protected ground, density is adjusted seasonally: for spring sowing, 16–20 plants/m² are used, and for autumn sowing, 25–30 plants/m². Due to the shallow root system, excessive crowding restricts aeration in the root zone, which increases the risk of leaf rot.
General information about the subject — on the page Planting density.
Varieties of Lettuce mentioned in the description
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Traject
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
7 records
Tombelo
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Tambay
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
7 records
Monica
ActiveLactuca sativa L. · Lettuce
SOUTHERN SEED S.R.L.
IT
NL
3 records
Kitonia
TerminatedLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
FR
4 records
Joice
ActiveLactuca sativa L. · Lettuce
BEJO ZADEN
NL
9 records
Katanas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Geraldine
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
ES
NL
7 records
Carmen
ActiveLactuca sativa L. · Lettuce
Graines Gautier SA (FR)
FR
SK
6 records
Constance
TerminatedLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
ES
FR
5 records
Candyka
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
6 records
Athmos
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
7 records
Weldon
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Volumia
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Veraine
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Thumper
ActiveLactuca sativa L. · Lettuce
Nunhems B.V.
NL
6 records
Neherai
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Napa
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Mirjamina
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
FR
4 records
Lores
ActiveLactuca sativa L. · Lettuce
Vilmorin SA (FR)
FR
4 records
Klimt
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
8 records
Kiteria
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
FR
4 records
Kovalski
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
FR
3 records