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Keukenhof Holland: Official Exhibitor
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How do I place an order?

You may submit orders by phone (800-990-9934), fax (845-469-3163), e-mail (, your regional A.D.R Bulbs, Inc sales representative or broker, or online at

What is your minimum order?

Online orders have a minimum of $350.00.

How do I know it's safe to order online?

We use a tokenization system to ensure the highest level of security. More details explaining the process can be found here:

Is there an order deadline?

Our entire fall catalog is available for purchase until July 20th. After this date, all orders are subject to availability (we carry approximately 75% of our selection in stock). In the spring, our entire selection is available until January 15th. After this date, all orders are subject to availability.

How do I obtain a copy of your print catalogs?

Please click on the catalog request forms located on our home page and fill out the appropriate information. A valid tax id is required to process catalog requests. You may also view interactive versions of our print catalogs in the Virtual Catalogs section of the website.


Do you accept credit cards?

Yes, we accept Visa, MasterCard, American Express and Discover.

When will my credit card be charged?

Effective January 1st, 2015 we are revising our credit card policy. Credit cards submitted for internet orders will be charged the week prior to shipment. For more detailed information regarding the necessity for this policy change, please contact Walter or Chris at 1-800-990-9934.

What are you terms for non-internet orders?

For first time customers, we require credit card payment prior to shipment. For future orders, credit is then established. Standard terms are 2% 10 day, 30 day net. There is a 1% late charge per month, 12% APR. Please view our Terms & Conditions section for more information.


How is freight calculated?

We base our freight percentages on the current FedEx Ground & Freight rates that we are being charged. We constantly review our carriers and program to ensure our rates are as economical as possible for our customers:

Order Total             Freight Percentage
$100 - $500           15%
$500.01 - $1250     12.5%
$1250.01 +            10%

When will my order ship?

Fall bulb orders placed in advance begin shipping on or around September 1st. Orders placed after September 15th are fulfilled on a same day shipping schedule.

Spring bulb orders placed in advance begin shipping on or around March 1st. Orders placed after March 15th are fulfilled on a same day shipping schedule.

Do you ship to Canada?

Yes. We can ship to Canada directly from our farm in Holland provided your order is received before July 20th. After this date, due to the unfortunate & extreme difficulties of shipping from the USA to Canada, we are unable to ship to our neighbors in the North.

Do you ship to Alaska, Hawaii or Puerto Rico?

Unfortunately we cannot ship outside of the continental USA and Canada (prior to July 20th).

I received bulbs or plants that are not up to standard. What should I do?

When dealing with any live product, it is possible that material may arrive in unsatisfactory condition. Kindly contact us via phone or e-mail within 10 days of receipt and we will either replace the product or credit your account immediately.


Are their quantity discounts for larger orders?

Yes! If you are need of 5000+ bulbs of a single variety, please contact us at 1-800-990-9934 or via e-mail at for further information on large quantity discounts.

Can I unsubscribe to the e-newsletter?

Yes, we use Constant Contact for all our e-mails to ensure the privacy of our client's information. You may safely unsubscribe at anytime!

Do you sell to homeowners?

Sorry, we are strictly wholesale and do not sell to homeowners.

Are the images on your website available for distribution?

Please note that the images on our website are copyright protected by A.D.R Bulbs, Inc and Visions BV of the Netherlands, and cannot be downloaded, copied or distributed without written consent from both parties.

Do you have a guarantee?

We 100% guarantee our bulbs be viable, healthy, and free from injurious insects and disease upon receipt. We gurantee that all of our bulbs are grown from cultivated stock (never harvested from the wild). In addition, all of our bulbs are inspected by United States, Canadian & Dutch Departments of Agriculture (copies of these certificates are available upon request).

We give no warranty to viability of our product after 10 days of receipt.  We cannot guarantee survival of product after this time due to factors that are beyond our control (improper storage, delayed planting, improper planting, extreme weather, poor soil conditions).

What are your hours?

From January to July, our business hours are 8:00 AM - 4:30 PM, EST.

From August to December, our business hours are Monday - Friday, 7:30 AM - 5:30 PM, EST. and Saturday, 8:00 AM - 12:00 PM, EST.


When should fall bulbs be planted?

The general rule of thumb is to plant when the soil temperatures in your zone reach approximately 55°F and nighttime temperatures stay between 40° and 50°F.

How late can I plant fall bulbs?

For the most part, as long as you are able to dig into the ground you can plant (especially with daffodils). From the time of first frost in your zone, you have 6-8 weeks left of planting time. 

How do I store bulbs prior to planting?

Bulbs must be stored in a cool, dry area with excellent ventilation. Bulbs are tough, and temperatures between 40 and 70 degrees won't bother them, however colder is always better in this case.


Which tulip varieties will come back the following year?

In our experience, no tulip variety can be guaranteed to return the following year which is why we market our tulip bulbs as annuals.

In Holland, tulips return with ease due to the sandy soil (perfect for drainage), cool spring weather (allows foliage to hang around and return energy to the bulb) and harvest techniques. In the USA, customers want their blooms to last as long as possible, whereas in Holland, our farm will remove the tulip heads after one week of flowering. The tulip bloom requires a lot of energy, thus stressing the bulb and preventing it from producing the large bulb that would be necessary for perennialization the following year.

That being said, some groups have stronger perennial tendencies than others. Darwin Hybrid's, Fosteriana, Greigii's, Kaufmanniana, & Specie tulips offer the best odds. Make sure to always apply a good nitrogen based fertilizer like Holland Bulb Buddy as well.


Daffodils are advertised in a variety of different sizes and ways throughout the industry (many of which are unclear or incorrect). This is due to confusion associated with the now defunct "old" grading system, and the current grading system.​ Dutch and United Kingdom grown daffodils are also graded & labeled in different ways. United Kingdom (or UK) daffodils are graded using a long slot riddle whereas Dutch daffodils are graded using a round riddle (the same way tulips are graded). The most important rule of thumb is as follows:

Dutch size DN1 = UK size 16+ cm (A select few varieties can produce a bulb like this. These are exhibition sized bulbs)
Dutch size DN2 = UK size 14/16 cm (Considered top size by today's standards. We strive to offer as many varieties as possible in this class)
Dutch size DN3 = UK size 12/14 cm (Most commonly marketed size)
Dutch & UK Size 10/12 cm (Generally found in big box stores)