Getting it to bloom

Why won't my Zygopetalum intermedium bloom? (and how to make it flower)

Also called Intermediate Zygopetalum (Zygopetalum intermedium).

More about zygopetalum intermedium

About Zygopetalum intermedium

Zygopetalum intermedium · also called Intermediate Zygopetalum · flowering

Zygopetalum intermedium is a robust Brazilian orchid with strongly fragrant, waxy green-and-brown flowers marked by a violet-streaked white lip. Closely allied to Z. mackaii and often confused with it, this intermediate grower wants bright light, steady moisture in growth and a slight cool winter rest. Keep water out of its crown to avoid the rots that trouble the genus.

Plant type: flowering

Watch for — Few flowers: Inadequate light or no winter cooling reduces spiking. Provide brighter light and a modest seasonal temperature drop to encourage blooms.

The reasons zygopetalum intermedium isn't blooming

Almost every non-blooming zygopetalum intermedium traces back to one of these, roughly in order of how common they are:

Too little sun — most of these need full sun (or very bright light) to flower well; shade gives leaves, not blooms.
Too much nitrogen feed, driving lush foliage at the expense of flowers (very common with general or lawn feeds).
The plant has not been deadheaded, so it stops flowering once it sets seed.
Irregular watering — drought or waterlogging at the budding stage makes buds abort.
It is still too young or was checked by a transplant and is rebuilding before flowering.

Feeding zygopetalum intermedium a high-nitrogen general feed and growing it in too little sun — you get a big leafy plant and almost no flowers.

The fix — how to get zygopetalum intermedium to flower

Maximise sun. Give zygopetalum intermedium the sunniest spot you have — for most bedding and fruiting plants, more direct light directly means more flowers.
Switch the feed. Move off high-nitrogen feeds and use a higher-potassium "bloom" or tomato-type feed as it comes into flower.
Deadhead regularly. Remove spent flowers often to keep it producing more rather than stopping to set seed.
Water consistently. Keep moisture even through budding and flowering — drought-then-flood swings make buds drop.

Light and feeding do most of the heavy lifting here. Dial in the spot with the light guide for zygopetalum intermedium and get the feeding right with the zygopetalum intermedium fertilising schedule — the wrong feed (too much nitrogen) is one of the most common silent reasons a healthy plant makes leaves instead of flowers.

Bloom season and what to expect

Zygopetalum intermedium flowers across its growing season (mostly summer) and, kept fed and deadheaded, can bloom for many weeks or right up to frost.

Post-bloom care so it flowers again

Deadhead, keep feeding lightly, and many will rebloom; collect seed from the best plants at the end of the season if you want to grow them again.

For everything else this plant needs day to day, see the full zygopetalum intermedium care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Zygopetalum intermedium blooming — frequently asked questions

Why won't my zygopetalum intermedium flower?

Zygopetalum intermedium blooms on the season's growth given enough sun, warmth and the right feed — there is no cold or photoperiod trick, just good growing conditions and a bloom-leaning feed. The most common reason it is not happening: Too little sun — most of these need full sun (or very bright light) to flower well; shade gives leaves, not blooms.

How do I make zygopetalum intermedium bloom?

Give zygopetalum intermedium the sunniest spot you have — for most bedding and fruiting plants, more direct light directly means more flowers. Move off high-nitrogen feeds and use a higher-potassium "bloom" or tomato-type feed as it comes into flower.

When does zygopetalum intermedium normally bloom?