All Milkweed are prone to aphids - it is just part of what you deal with. You can use natural pesticides late in the evenings, but even better use Palmolive dish washing liquid. Do not use the newer versions of this or other brands, but instead just use the old green variety, because the 'surfactants' it contains will not harm the plant or the pollinators coming to feed. In agriculture, surfactants (short for “surface-acting agents”) help farmers use herbicides and pesticides more efficiently by making applications stick to the plants. This dish washing liquid will serve as a pesticide to aphids and other sucking insects. (I also use it on the beetles on my tomatoes.) You can also just spray the aphids off with the hose but they tend to come back when handled this way. Use 2 Tablespoons of this soap in a Windex sized spray bottle and gently slosh around to mix, then spray.

    Here is a little trick to help condition your soil and to also help cut down on slugs, fleas, chiggers, ticks, squirrels, and snakes. There are arguments about this and I will let others do the arguing but I can tell you that I have had very good results with this, and have used it for many years in each garden I have had, in different states. It is granular degradable sulphur fertilizer that can be used both as a source of plant nutrient sulphur and/or as an amendment for correction of problem alkali soils helping to add acidity so you can grow plants you might not have been able to previously. It will also help to break up clay soils and improve the texture. Do not use powdered Sulfur, as it will aerosolize, and put you at risk of breathing the dust / powder. Doing so will cause you to burn your respiratory system causing you possible danger.