Growing Vandas in

South FloridaNaoki Kawamura

January 9, 2020

Sympodial vs. Monopodial

Sympodial vs. Monopodial

Sympodial � Cattleya

� Encyclia

� Brassavola

� Paphiopedilum

� Phragmipidium

� Cymbidium

� Oncidium

Monopodial � Vanda

� Phalaenopsis

� Aerdies

� Renanthera

� Angraecum

� Rhynchostylis

Four types of

leaf shape

Strap-leaf Strap-leaf

Quarter TereteQuarter Terete

Semi-terete Semi-terete

TereteTerete

Cross-section of leaf

Source - https://www.tohgarden.com/wp-

content/uploads/2011/09/Van_type-of-leaf.jpg

Cultural

Requirement

Temperature and Humidity Temperature and Humidity

Light Light

Air Movement Air Movement

Watering Watering

Fertilizing Fertilizing

Temperature and

Humidity

Optimal temperature

The day is 65F or higher and night

temperatures are not lower than 55F.

Humidity around 80% is

appropriate on hot sunny days.

Light

� Vandaceous orchids require

strong light.

� Provide morning sun when

possible.

� Semi-terete and terete types

can be grown in full sun all day

when they are fully acclimated.

� Strap-leaved plants need

additional shade during the

hottest part of the day/season.

Air

movement

It is important to keep leaf temperature

down an avoid cell damage from heat

under summer sun.

For more open conditions – the natural

breeze will balance light, temperature

and moisture for healthy growth and

flowering.

It is important to restrict air movement

under colder temperatures.

Watering� A high daytime humidity is

essential, especially on sunny

days, and vandaceous plants

outdoors may need watering

and misting several times daily

during the growing season.

� Limit watering during cooler

weather

� It is best to have roots and

crowns be dried out before sun

sets.

Fertilizing

Vandaceous plants are heavy feeders. Vandaceous plants are heavy feeders.

Balanced fertilizer, such as 20-20-20, weekly during

the growing season. (Adding supplements such as

Maxicrop or Superthrive can be beneficial on

plant growth )

Balanced fertilizer, such as 20-20-20, weekly during

the growing season. (Adding supplements such as

Maxicrop or Superthrive can be beneficial on

plant growth )

Substituting a fertilizer high in phosphorus, such as

10-30-20 at every third feeding

Substituting a fertilizer high in phosphorus, such as

10-30-20 at every third feeding

My Fertilizer Mix

Palmer Orchids Cal-Mag + Seaweed

(14-2-14) 1 tsp per gallon

Plant Potion #9 from Laura Newton

½ tsp per gallon with a few drops of

dish soap

Source : https://bulbophyllums.com/

Pest and fungus control

� Thrips – Apply Orthene ½ tsp per gallon, apply

again in two weeks. Every 6-8 weeks thereafter.

� Fungus – Apply Clearys 3336F 1 (one) tbsp per

gallon, apply again in two weeks. Every month thereafter.

� Caution : Be sure to protect your whole body

including eyes, nose and mouth. Take a shower after application.

Florida Vanda Growing

Month by Month by Martin Motes, PhD

My Growing Space

Before (Portland, OR)

and

After (Venice, FL)

Portland Oregon � All orchids were kept inside the

garage year around.

� 4 units of 400 W Metal Halid lights.

Replaced every year.

� Each unit was connected with duct

tubes.

� Once the temperature hit a certain degree, the fan pulled hot air out of

the room.

� The oscillating fan was on 24/7.

� Watered daily

� Excess water was held on trays and syphoned out.

� Heat/Light/humidity were not

sufficient.

Venice

� Southwest Facing pool cage get plenty of sun in sunny days.

� Our growing space was open to the VAOS members in May, 2018

� Vanda racks are custom made by SRQ Welding (121 Triple Diamond Blvd. unit 14, Nokomis, 941-484-5947 Contact : Drew) All aluminum with vinyl casters.

AOS Awards 2019

Vandachostylis Jim Solly ‘Alexis’ Love’ HCC/AOS 06/22/2019

Photography by Kay Clark

Sealara Khoo Kay Ann ‘Nao-Ben’ AM/AOS

09/14/2019Photography by Wes Newton

Vanda Heinz Graf ‘Jamie’ AM/AOS

09/25/2019Photography by Kay Clark

Vandachostylis Michael Dean ‘Dodi’ HCC/AOS

09/25/2019Photography by Kay Clark

Vanda Jeanne et Marius Vidon ‘Annie & Bella’ HCC/AOS

09/25/2019Photography by Kay Clark

Vanda Robert Moorhead ‘Naoki’s Purple Lip’ HCC/AOS

10/26/2019Photography by Kay Clark

Vanda Robert Moorhead ‘Ed Carter’ AM/AOS 10/26/2019

Photography by Kay Clark

Papilionanda Austen Liam Kean Hae Chen‘Michael D. Gibson’ FCC/AOS

Photography by Wes Newton

Florida North Central Judging Centerwww.fncjc.Shutterfly.com

� Orlando Area Orchid Judging – Second Saturday

� Clermont Garden Club – 849 West Ave., Clermont FL 34711

� Flowers must arrive by 1 p.m. Judging begins at 1:30p.m.

� Tampa Area Orchid Judging – Fourth week of the month

� Christ the King Mary Martha Center – 717 S. Dale Mabry Hwy, Tampa, FL 33609

� Flowers must arrive thirty minutes prior to judging for registration.

� Wednesday Judging begins 7p.m.

� Saturday Judging begins at 10:30a.m.