Slow-Spiking Cattleya: Sheath Development and Winter Care

Patience with Sheathed Spikes

Cattleyas form a sheath (papery bract) from the pseudobulb top. The spike grows inside, eventually piercing the sheath tip. This takes months. Some sheaths brown but still produce flowers later.

Do Not Open Sheaths

Manual opening damages the delicate spike inside. Shine a bright light behind the sheath—you may see the spike/bud shadow.

Winter Culture (Pennsylvania)

• Maximize light (south window).
• Temp >60°F, humidity >50%, air movement.
• Water sparingly: media almost dry between.
• Feed weakly or not at all in winter.

Bloom Timing

Sheath formation to open flowers can take 3–6 months. Your month-old plants are on schedule.