Spanish lavender (Lavandula stoechas) is generally considered edible even when grown indoors.
However, just like when it's grown outdoors in any climate or in containers, the crucial point remains: it is generally not recommended for most culinary uses due to its strong, often bitter, and medicinal taste.
Here's a breakdown of why this holds true for indoor growing:
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Flavor Profile is Inherent, Not Location-Dependent: The chemical composition of Spanish lavender, specifically its higher camphor content, is a characteristic of the species itself. Growing it indoors, where it might experience more stable temperatures and light, doesn't alter this fundamental flavor profile. It will still impart that strong, sometimes resinous, bitter, or "soapy" taste if used in food.
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Indoor Growing Suitability: Spanish lavender can be grown indoors, but it requires bright light (ideally a sunny south-facing window or supplemental grow lights) and good air circulation to thrive and prevent fungal issues. Its ability to grow indoors doesn't make it more palatable for culinary purposes.
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Best Use Indoors: Indoors, Spanish lavender is primarily valued for its ornamental appeal, especially its unique "bunny ear" flowers, and its aromatic foliage. It's often grown as a decorative houseplant or brought in for winter protection in colder climates.
In summary for indoor growing:
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Is it edible? Yes, technically, it's not toxic to humans in small quantities.
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Is it recommended for cooking/baking? No. Its strong, camphorous, and often bitter flavor is generally considered undesirable in culinary applications, particularly in sweet dishes or baking.
For any culinary use of lavender, whether you're growing it indoors or out, in a pot or in the ground, in a hot climate or a cold one, your best and most delicious option is always English lavender (Lavandula angustifolia). Its naturally low camphor content and sweet, delicate floral notes are what make lavender a prized culinary herb.
