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[CULTURE] · France, Spain · 6 sources

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Gardening advice for autumn plant care and seasonal transitions

As the growing season transitions, gardeners are advised to adopt specific maintenance techniques to ensure plant health and future harvests. For potted bougainvilleas, mid-September is a critical period to induce spring flowering by reducing watering by 50% and ceasing nitrogen-rich fertilizers.

In vegetable gardens, autumn is an ideal time to plant crops such as spinach, lamb's lettuce, radishes, and pak choi. To manage late-season tomatoes, gardeners can use ripening techniques to save green fruit before frost. Additionally, rather than pulling up tomato plants entirely, cutting stems at ground level allows roots to decompose in situ, enriching the soil architecture for future seasons.

For perennials, experts recommend against cutting dry stems in September. Leaving these stems provides insulation for roots against frost and creates habitats for beneficial insects like ladybugs. Similarly, rosemary care requires careful monitoring; brown foliage often indicates root asphyxiation from overwatering rather than thirst, necessitating improved drainage rather than increased hydration.

Entities

INRAE · Société Nationale d’Horticulture de France