When to plant bell peppers in Castellón de la Plana: from 14 April

In Castellón de la Plana, bell pepper: sow for seedlings from 23 January; plant into a greenhouse from 24 March; plant out into open ground from 14 April. There is no autumn frost here, so the frost dates set no end to the window.

Bell Pepper in Castellón de la Plana: soil, season and weather

In Castellón de la Plana the soil, not frost, sets the date: the last frost is over around 12 January, but the top 7 cm of soil reaches 18 °C — the minimum on the bell pepper card — only around 14 April, 92 days later. Castellón de la Plana has no autumn frost in the median year, so frost does not end the season.

Last spring frost	12 January
Top 7 cm of soil at 18 °C	14 April, 92 days after the last frost
Into an unheated greenhouse	from 24 March; March outside: 8.9 °C at night, 17.6 °C by day; card 15–30 °C
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	from 23 June
Daylight	10:36 on 13 February, 13:12 on 14 April
Watering outdoors when fruiting (card)	every 4 days; the driest month, July, has 2 rainy days

The same dates in Castellón de la Plana hold for Cucumber, Eggplant, Zucchini, Pumpkin and Watermelon.

Bell Pepper in Castellón de la Plana: care after planting

Planted on 14 April: in the first weeks water every 5 days.

Feeding, by the card’s schedule from that day:

14 April — feed: balanced (NPK)
12 May — feed: nitrogen

Pests and diseases of bell pepper to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Weather in Castellón de la Plana during the bell pepper season

No month of the season averages above the bell pepper card's 15–30 °C by day; the warmest, August, averages 30 °C. Nights average below 15 °C in April (10.8 °C) and May (14.5 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
April	19.3	10.8	32	6	13:15
May	22.8	14.5	26	5	14:22
June	27	19.2	19	3	15:00
July	29.4	22	15	2	14:45
August	30	22.5	16	3	13:47
September	26.9	19.3	48	6	12:30

ERA5 2016–2025, Open-Meteo

Bell Pepper in nearby cities

All the nearest cities on our list plant bell pepper later than Castellón de la Plana; the closest date is in Valencia, 8 days later.

City	Distance	Date	Difference
Valencia	64 km	from 22 April	8 days later
Teruel	99 km	12 June – 18 July	59 days later
Tortosa	103 km	from 7 May	23 days later
Gandia	114 km	from 5 May	21 days later
Tarragona	167 km	from 30 April	16 days later
Cuenca (Spain)	177 km	14 May – 24 July	30 days later

Where to buy bell pepper plants and seeds near Castellón de la Plana

Buy plants ready to set out from 14 April (from 24 March for an unheated greenhouse); seed for raising your own is sown from 23 January. Within 15 km of Castellón de la Plana OpenStreetMap lists 3 garden centres, 1 farm-supply shop and 8 markets (collected 27 October 2026).

Mercat d'Abastos — market
2 km
Mercat Central — market
5 km
Mercat Central — market
7 km
Mercadillo — market
5 km

Questions