Group : Zygopetalum
Covers these genera : Acacallis (Acclls.) , Ackermania (Akm.) , Aganax (Agx.) , Aganisia (Agn.) , Batemannia (Btmna.) , Benzingia (Ben.) , Bollea (Bol.) , Bolleanthes (Blth.) , Chaubardia (Chau.) , Chaubardiella (Chbrdl.) , Chondrorhyncha (Chdrh.) , Cochleanthes (Cnths.) , Colax (Clx.) , Dichaea (Dich.) , Galeopetalum (Gptm.) , Galeottia (Glta.) , Hamelwellsara (Hmwsa.) , Huntleya (Hya.) , Keferanthes (Kefth.) , Kefersteinia (Kefst.) , Koellensteinia (Koell.) , Menadenium (Mndnm.) , Mendoncella (Mdcla.) , Peristeria (Per.) , Pescatobollea (Psbol.) , Pescatorea (Pesc.) , Pescoranthes (Psnth.) , Promenaea (Prom.) , Propetalum (Pptm.) , Stenia (Stenia) , Warrea (Wra.) , Woodwardara (Wdwa.) , Zygocolax (Zcx.) , Zygoneria (Zga.) , Zygopetalum (Z.) , Zygosepalum (Zspm.)

General information for this group :
Most members of this group require nearly identical conditions. They are easy to grow and bloom when provided with the right environment. You can find some of the "closest to dark/light blue" flowers in this group. The initial discussion is for Zygopetalums and any hybrid which has Zygopetalum in it's background. For subgroups that have additional information, it will appear under individual headings near the bottom of the page. Alternatively, you can click on the genus name above to take you directly to that subgroup.


Subgroup : Zygopetalum and its hybrids

Covers these genera : Batemannia (Btmna.) , Colax (Clx.) , Galeopetalum (Gptm.) , Galeottia (Glta.) , Hamelwellsara (Hmwsa.) , Koellensteinia (Koell.) , Menadenium (Mndnm.) , Mendoncella (Mdcla.) , Peristeria (Per.) , Propetalum (Pptm.) , Warrea (Wra.) , Woodwardara (Wdwa.) , Zygocolax (Zcx.) , Zygoneria (Zga.) , Zygopetalum (Z.) , Zygosepalum (Zspm.)

Light and Temperature :
Moderate to bright light throughout the year. They do best in an east or west window or a south window filtered by a sheer curtain. Leaves should be a medium green colour. Yellowing leaves usually indicates too much light, while dark green indicates not enough light. These plants are eventually deciduous, so don't be alarmed about the eventual loss of old leaves. Intermediate temperatures suit most plants quite well, and regular house temperatures provide this. Ample air movement will help prevent spotting on the leaves. Do not mist these plants. Misting of the leaves will encourage more spotting than usual, and possibly rot as well.

Media : These plants perform quite happily in regular bark mixes, or semi-terrestrial mixes. You can refer to the Repotting page for details on media choices and blends to use. Remember that the size of the pot you're going to use will be a factor.

Water : Keep evenly moist during the warmer months, but allow to approach dryness between waterings during the cooler months. Do not stand the pots in water. A good range of humidity is 40% to 60%, but plants will tolerate lower levels of humidity if necessary.

Fertilizing : Only fertilize plants during active growth. A high nitrogen fertilizer (ie. 20-5-15) applied at a rate of 1/4 to 1/2 strength every other watering is beneficial from the start of new growth until August. Then switch to a higher potassium fertilizer (ie. 15-5-20) from August to October. This will help to encourage adequate food stores for a good blooming on mature plants. To simplify the fertilizing schedules, plants will also perform well from receiving a single well-balanced fertilizer (ie. 15-5-15) throughout the fertilizing period.

Blooming : Most Zygopetalum species and hybrids are quite fragrant. Zygopetalums usually bloom when light exposure is suddenly reduced. You can trigger this by shortening the day-length by 2 hours for 3 to 4 weeks. I tend to do this at a convenient time of the year by altering the setting on my light timers, starting in mid-November and continuing until mid-December. Then I return to my usual day-length and a few weeks later the new spikes will appear. Some species will bloom off of the last matured pseudobulb, while others will produce a spike along with the emerging new growth.


Subgroup : Climbers

Covers these genera : Acacallis (Acclls.) , Aganax (Agx.) , Aganisia (Agn.) , Dichaea (Dich.)

Same as for Zygopetalum, except :

  • They should never dry out completely
  • They are inclined to climb or ramble, so do very well on treefern or cork rafts, with a bit more sphagnum padding than usual.
  • Most can handle cool-intermediate to intermediate temperatures.
  • Benefit from having roots (not leaves) misted daily in drier environments.

  • Subgroup : Fan Types

    Covers these genera : Bollea (Bol.) , Bolleanthes (Blth.) , Chaubardia (Chau.) , Chaubardiella (Chbrdl.) , Chondrorhyncha (Chdrh.) , Cochleanthes (Cnths.) , Huntleya (Hya.) , Keferanthes (Kefth.) , Pescatobollea (Psbol.) , Pescatorea (Pesc.) , Pescoranthes (Psnth.)

    Description : Plants produce fan-shaped leaf arrangements. Some have small pseudobulbs or none at all.

    Same as for Zygopetalum, except :

  • They should never dry out completely
  • Coarse or loose mixes are preferred

  • Subgroup : Miniatures

    Covers these genera : Ackermania (Akm.) , Benzingia (Ben.) , Kefersteinia (Kefst.) , Promenaea (Prom.) , Stenia (Stenia)

    Same as for Zygopetalum, except :

  • They should never dry out completely
  • Do well in sphagnum or sphagnum/perlite mixes when in small pots
  • Most can handle cool-intermediate to intermediate temperatures.
  • Excellent candidates for terrariums, where they are often nearly-everblooming

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