I grew spaanse pepper/chilies already for 3 summers in my balcony in Rotterdam.
I sowed them on Feb/March in the small glass container and put it in the windowsill in my living room to keep them warmed.
Kept them moist all the time and end of April/beginning of May, I planted them in the big pots and placed them in the sunny spot in my balcony. I pinched the tips of the plants to encourage the growth after I planted them.
Now in July, my pepper plants are big, bushy and healthy. Bunches of white flowers are starting to open and giving such delight view from my kitchen.
I am confident they will give me again good harvest this year.
Last year, in my small balcony, I harvested almost 3 kilos of beautiful red chilies.I kept them in the refrigerator and it last me for over 6 months.