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A Few Tips on Winterizing your Rhododendrons

I thought that I might also share some tips with you as to how best to prepare your plants for cold weather. These tips are mostly from The American Rhododendron Society( who are a great source of information for rhododendron growers.IMG_2060

  • Hydration is important for the winter. If you have the ability for a good soaking in late fall and covering with mulch that will hold the moisture and insulate the ground around the root system as long as possible, your plants can use this moisture intake to help their systems during the freezing winter months.
  • Protection from drying winds. Planting I areas that are sheltered from winds are recommended. If you have plants that may have wind exposure, creating a wind break or wrapping in burlap can help protect them.
  • If you plants are in containers, move them to areas that are close to the house and/or onto the ground where they can use the warmth that is radiated by the heat of the house and ground.
  • A customer from Connecticut suggested spraying with a 5:1 dilution of Wilt-Pruf in November on a dry day above freezing. This will help in preventing wind damage.  He reminded me how difficult it can be to spread a trap or burlap on mature plants that can be 15 feet tall!  Thank you Bruce!  Here is a link to Wilt-Pruf on amazon.
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Reserve Your Plants for the Spring and still have Money for Presents under the Tree!

Don’t miss out on the best selection of plants we have now in the fall!  The plants listed are for sale to landscapers and retail nurseries across the country.  These businesses place their orders for the Fall for the Spring.  I want you to have the best selection possible, so now is the time to place your orders without having to spend your entire planting fund(or Christmas fund!).  Just place of deposit of 25% of the cost of the plants, plus shipping.  I will hold onto these plants for you until the Spring, billing you for the remaining balance in January, February and March. We will ship in the middle of April unless you let us know that you would like them at a different time.  It’s easy to do!  Follow these steps:

  1. Select the plants you want from the web site.
  2. Use Coupon Code “springblooms2016”
  3. The coupon will take 75% off the price of the plants. The remaining 25% and shipping will act as a deposit
  4. I will send you a bill via PayPal in January, February and March, requesting 25% of the total.
  5. I will ship your order around the middle of April or at your request.

If you change your mind along the way, all that you have paid will be completely refundable.  If you want to pay entirely at one time, that works too!  I also want you to know that we ship year round in case you want to get a few things in before winter.  There may be a week here or there that we will have a delay, but if your weather is suitable to receive a shipment, we will ship.Oudijk's Sensation3

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First Year Plants

We are very happy to offer our customers plants that are in their first year of life.  This is a very economical way of establishing variety while learning about the growth habits of their plants.  We offer two different types of first year plants, both being “clones” of the parent plants, ensuring the characteristics of the named plant.

Cuttings:  Cutting are usually taken in the fall and rooted over the winter in a warm and  humid climate. They are cut from parent plants trimmed, “wounded”, dipped in a rooting hormone, and placed in a sterile bed to root over the winter.  In the late spring, the result is the cutting taken from the parent plants with a root ball that ranges in size from a golf ball to a baseball with new growth emerging from the stem.

Tissue Culture:  Tissue culture or micro propagation is a popular method of producing large numbers of rhododendrons for commercial production.  Over simplified, it involves taking a small vegetative shoot section from the parent plant and putting it into a test tube.  Through the use of agars and auxins, absolute sanitation, proper temperature and lights, the vegetative shoot is induced to grow into multiple “seedling-like” growths with no roots. This tiny juvenile vegetative shoot is then rooted.  These plants tend to have a more minute shrub like look and will have slightly larger root balls.

From either method, you will have a healthy little plant that needs a bit more care than an established plants.

As in nature, new plants need extra protection from the elements.  If nature had produced these plants, they would be seedling growing under the protection of the parent plants.  Your plant will need to have protection also which includes filtered light, protection from wind and regular moisture.  They will also be susceptible to fungus and insect.

Below is the hand out we send with each order of first year plants.  The instructions are given to ensure that you have the most success with your plants, but please don’t get lost in the “must do this or must do that”.  Consider yourself the plant parent and protect your little plants for their first year and you will be amazed how quickly you will have a full size plant giving you enjoyment in your landscape!  Jim


Thank you for your purchase of first year plants. This is how most every rhododendron that is sold today starts! Please find below some growing tips and as always, please feel free to email or call if you have any questions.

PLANTING: Pot up or plant in a protected area. If using a pot, plant into 4” or one gallon. Use a loose, well-draining medium such as one containing some bark, compost, or perlite.

WATERING: Keep soil thoroughly wet but never soggy.

PROTECTION: Shelter from heat, frost, and wind for the first 6-12 months in a protected area such as a plastic covered hoop house. Keep it open and shaded in summer. Antidessicants such as Vaporgard or Wilt Pruf (available online via Amazon)can be used as protection from both heat and cold.
SHAPING: New growth is expected in 1-2 flushes the first summer. Pinching out the center bud will help the lateral buds develop thus producing a more bushy plant.

FERTILIZING: Use a liquid fertilizer 20-20-20 1T/gal. applied once every 7 to 10 days between April and August. Stop fertilizing in time to allow new growth to harden before first frost. Epsom salts, 1 T/gal., can be applied occasionally to add magnesium for better color.

WEEDING: Hand weeding is best because plants are shallow rooted. Preemergent herbicides are not recommended for these young plants.

DISEASE CONTROL: Root rot occurs in some varieties, especially in yellow flowered rhododendrons, when conditions are both hot and wet. In the Pacific Northwest this is in July and August. Well drained planting soil is essential. New biological products such as Rootshield (available via Amazon) or Actino-iron contain beneficial organisms that form protective colonies on the plant roots. These must be applied before problems are expected. Powdery mildew may be evident in some varieties and some climates. Use a systemic fungicide, such as one used for roses, so there is no need to spray leaf undersides.

PEST CONTROL: Weevils may be a problem. Watch for notching from the chewing beetles in the summer. Various insecticides may be used to control them. The grub stages of the weevil, which exists in the soil in fall, winter, and spring, does the most damage. It eats roots and underground stems and may completely girdle the plant and kill it.