Answer: If you use a long handled watering wand with a finger tip or trigger shut off and adjustable spray you should be able to control the way you water so that you can avoid wetting foliage and just apply the water to the roots. Otherwise, perhaps your supplier can help you find an adaptor fitting to connect the shield you found to the hose. Charleys Greenhouse Supply for example offers several long handled wands for greenhouse use.
I hope this helps.
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