Natural, free remedies for hypertension, high blood pressure??????

4 weeks ago I started walking 2 miles/day and eating a heart healthy diet. My blood pressure has fallen from 150/100 to 128/80 in that time. I plan to continue. What other things can I do to keep my blood pressure under control.

eat a banana a day, its not free but doesnt cost that much

great job, keep up with both, you can avoid salt in addition, good luck
No red meat!
Congratulations!

Watch the sodium intake and the caffiene.
low salt diet

some say garlic

small dose of aspirin each day if you are not allergic

manage stress in your work place and at home
learn relaxation techniques

120/80 is great - you don't want your BP to be too low, actually!
You can have red meat, just limit it...the cholesterol is the issue. It sounds like you are already on the right track...just follow a cardiac diet - aka low sodium, low fat, low cholesterol. Include more fruits and veggies, whole grains (which are heart healthy), and lean meats and dairy. Avoid too much cheese though...it's very high in sodium. And keep up the exercise!
I'm a registered dietitian